diff --git a/Demo.html b/Demo.html
index ec99ad9..7287705 100644
--- a/Demo.html
+++ b/Demo.html
@@ -23,10 +23,41 @@
   p {
     margin: 5px 0;
   }
-  iframe {
+  #editor {
+    -moz-box-sizing: border-box;
+    -webkit-box-sizing: border-box;
+    box-sizing: border-box;
+    min-height: 200px;
     border: 1px solid #888;
-    width: 100%;
-    height: 500px;
+    padding: 1em;
+    background: transparent;
+    color: #2b2b2b;
+    font: 13px/1.35 Helvetica, arial, sans-serif;
+    cursor: text;
+  }
+  a {
+    text-decoration: underline;
+  }
+  h2 {
+    font-size: 123.1%;
+  }
+  h3 {
+    font-size: 108%;
+  }
+  h1,h2,h3,p {
+    margin: 1em 0;
+  }
+  h4,h5,h6 {
+    margin: 0;
+  }
+  ul, ol {
+    margin: 0 1em;
+    padding: 0 1em;
+  }
+  blockquote {
+    border-left: 2px solid blue;
+    margin: 0;
+    padding: 0 10px;
   }
   </style>
 </head>
@@ -69,84 +100,19 @@
     <span id="redo">Redo</span>
   </p>
 </header>
-<script type="text/template" id="editorStyles">
-  html {
-    height: 100%;
-  }
-  body {
-    -moz-box-sizing: border-box;
-    -webkit-box-sizing: border-box;
-    box-sizing: border-box;
-    height: 100%;
-    padding: 1em;
-    background: transparent;
-    color: #2b2b2b;
-    font: 13px/1.35 Helvetica, arial, sans-serif;
-    cursor: text;
-  }
-  a {
-    text-decoration: underline;
-  }
-  h1 {
-    font-size: 138.5%;
-  }
-  h2 {
-    font-size: 123.1%;
-  }
-  h3 {
-    font-size: 108%;
-  }
-  h1,h2,h3,p {
-    margin: 1em 0;
-  }
-  h4,h5,h6 {
-    margin: 0;
-  }
-  ul, ol {
-    margin: 0 1em;
-    padding: 0 1em;
-  }
-  blockquote {
-    border-left: 2px solid blue;
-    margin: 0;
-    padding: 0 10px;
-  }
-</script>
 <script type="text/javascript" src="build/squire-raw.js"></script>
+<div id="editor"></div>
 <script type="text/javascript" charset="utf-8">
-  var editor;
-  var iframe = document.createElement( 'iframe' );
-  iframe.addEventListener( 'load', function () {
-    // Make sure we're in standards mode.
-    var doc = iframe.contentDocument;
-    if ( doc.compatMode !== 'CSS1Compat' ) {
-        doc.open();
-        doc.write( '<!DOCTYPE html><title></title>' );
-        doc.close();
-    }
-    // doc.close() can cause a re-entrant load event in some browsers,
-    // such as IE9.
-    if ( editor ) {
-        return;
-    }
-    // Create Squire instance
-    editor = new Squire( doc, {
-        blockTag: 'p',
-        blockAttributes: {'class': 'paragraph'},
-        tagAttributes: {
-            ul: {'class': 'UL'},
-            ol: {'class': 'OL'},
-            li: {'class': 'listItem'}
-        }
-    });
-    // Add styles to frame
-    var style = doc.createElement( 'style' );
-    style.type = 'text/css';
-    style.textContent = document.getElementById( 'editorStyles' ).textContent;
-    doc.querySelector( 'head' ).appendChild( style );
-  }, false );
-
-  document.body.appendChild( iframe );
+  var div = document.getElementById( 'editor' );
+  var editor = new Squire( div, {
+      blockTag: 'p',
+      blockAttributes: {'class': 'paragraph'},
+      tagAttributes: {
+          ul: {'class': 'UL'},
+          ol: {'class': 'OL'},
+          li: {'class': 'listItem'}
+      }
+  });
 
   document.addEventListener( 'click', function ( e ) {
     var id = e.target.id,
diff --git a/build/squire-raw.js b/build/squire-raw.js
index 9d6aed8..d3abae5 100644
--- a/build/squire-raw.js
+++ b/build/squire-raw.js
@@ -7,6 +7,7 @@
 var DOCUMENT_POSITION_PRECEDING = 2; // Node.DOCUMENT_POSITION_PRECEDING
 var ELEMENT_NODE = 1;                // Node.ELEMENT_NODE;
 var TEXT_NODE = 3;                   // Node.TEXT_NODE;
+var DOCUMENT_NODE = 9;               // Node.DOCUMENT_NODE;
 var DOCUMENT_FRAGMENT_NODE = 11;     // Node.DOCUMENT_FRAGMENT_NODE;
 var SHOW_ELEMENT = 1;                // NodeFilter.SHOW_ELEMENT;
 var SHOW_TEXT = 4;                   // NodeFilter.SHOW_TEXT;
@@ -190,27 +191,6 @@ function every ( nodeList, fn ) {
 
 // ---
 
-function hasTagAttributes ( node, tag, attributes ) {
-    if ( node.nodeName !== tag ) {
-        return false;
-    }
-    for ( var attr in attributes ) {
-        if ( node.getAttribute( attr ) !== attributes[ attr ] ) {
-            return false;
-        }
-    }
-    return true;
-}
-function areAlike ( node, node2 ) {
-    return !isLeaf( node ) && (
-        node.nodeType === node2.nodeType &&
-        node.nodeName === node2.nodeName &&
-        node.className === node2.className &&
-        ( ( !node.style && !node2.style ) ||
-          node.style.cssText === node2.style.cssText )
-    );
-}
-
 function isLeaf ( node ) {
     return node.nodeType === ELEMENT_NODE &&
         !!leafNodeNames[ node.nodeName ];
@@ -229,48 +209,80 @@ function isContainer ( node ) {
         !isInline( node ) && !isBlock( node );
 }
 
-function getBlockWalker ( node ) {
-    var doc = node.ownerDocument,
-        walker = new TreeWalker(
-            doc.body, SHOW_ELEMENT, isBlock, false );
+function getBlockWalker ( node, root ) {
+    var walker = new TreeWalker( root, SHOW_ELEMENT, isBlock, false );
     walker.currentNode = node;
     return walker;
 }
+function getPreviousBlock ( node, root ) {
+    node = getBlockWalker( node, root ).previousNode();
+    return node !== root ? node : null;
+}
+function getNextBlock ( node, root ) {
+    node = getBlockWalker( node, root ).nextNode();
+    return node !== root ? node : null;
+}
 
-function getPreviousBlock ( node ) {
-    return getBlockWalker( node ).previousNode();
+function areAlike ( node, node2 ) {
+    return !isLeaf( node ) && (
+        node.nodeType === node2.nodeType &&
+        node.nodeName === node2.nodeName &&
+        node.className === node2.className &&
+        ( ( !node.style && !node2.style ) ||
+          node.style.cssText === node2.style.cssText )
+    );
 }
-function getNextBlock ( node ) {
-    return getBlockWalker( node ).nextNode();
+function hasTagAttributes ( node, tag, attributes ) {
+    if ( node.nodeName !== tag ) {
+        return false;
+    }
+    for ( var attr in attributes ) {
+        if ( node.getAttribute( attr ) !== attributes[ attr ] ) {
+            return false;
+        }
+    }
+    return true;
 }
-function getNearest ( node, tag, attributes ) {
-    do {
+function getNearest ( node, root, tag, attributes ) {
+    while ( node && node !== root ) {
         if ( hasTagAttributes( node, tag, attributes ) ) {
             return node;
         }
-    } while ( node = node.parentNode );
+        node = node.parentNode;
+    }
     return null;
 }
+function isOrContains ( parent, node ) {
+    while ( node ) {
+        if ( node === parent ) {
+            return true;
+        }
+        node = node.parentNode;
+    }
+    return false;
+}
 
-function getPath ( node ) {
+function getPath ( node, root ) {
     var parent = node.parentNode,
         path, id, className, classNames, dir;
-    if ( !parent || node.nodeType !== ELEMENT_NODE ) {
-        path = parent ? getPath( parent ) : '';
+    if ( node === root ) {
+        path = '';
     } else {
-        path = getPath( parent );
-        path += ( path ? '>' : '' ) + node.nodeName;
-        if ( id = node.id ) {
-            path += '#' + id;
-        }
-        if ( className = node.className.trim() ) {
-            classNames = className.split( /\s\s*/ );
-            classNames.sort();
-            path += '.';
-            path += classNames.join( '.' );
-        }
-        if ( dir = node.dir ) {
-            path += '[dir=' + dir + ']';
+        path = getPath( parent, root );
+        if ( node.nodeType === ELEMENT_NODE ) {
+            path += ( path ? '>' : '' ) + node.nodeName;
+            if ( id = node.id ) {
+                path += '#' + id;
+            }
+            if ( className = node.className.trim() ) {
+                classNames = className.split( /\s\s*/ );
+                classNames.sort();
+                path += '.';
+                path += classNames.join( '.' );
+            }
+            if ( dir = node.dir ) {
+                path += '[dir=' + dir + ']';
+            }
         }
     }
     return path;
@@ -328,16 +340,16 @@ function createElement ( doc, tag, props, children ) {
     return el;
 }
 
-function fixCursor ( node ) {
+function fixCursor ( node, root ) {
     // In Webkit and Gecko, block level elements are collapsed and
     // unfocussable if they have no content. To remedy this, a <BR> must be
     // inserted. In Opera and IE, we just need a textnode in order for the
     // cursor to appear.
     var doc = node.ownerDocument,
-        root = node,
+        originalNode = node,
         fixer, child;
 
-    if ( node.nodeName === 'BODY' ) {
+    if ( node === root ) {
         if ( !( child = node.firstChild ) || child.nodeName === 'BR' ) {
             fixer = getSquireInstance( doc ).createDefaultBlock();
             if ( child ) {
@@ -397,11 +409,11 @@ function fixCursor ( node ) {
         node.appendChild( fixer );
     }
 
-    return root;
+    return originalNode;
 }
 
 // Recursively examine container nodes and wrap any inline children.
-function fixContainer ( container ) {
+function fixContainer ( container, root ) {
     var children = container.childNodes,
         doc = container.ownerDocument,
         wrapper = null,
@@ -424,7 +436,7 @@ function fixContainer ( container ) {
                 wrapper = createElement( doc,
                     config.blockTag, config.blockAttributes );
             }
-            fixCursor( wrapper );
+            fixCursor( wrapper, root );
             if ( isBR ) {
                 container.replaceChild( wrapper, child );
             } else {
@@ -435,20 +447,21 @@ function fixContainer ( container ) {
             wrapper = null;
         }
         if ( isContainer( child ) ) {
-            fixContainer( child );
+            fixContainer( child, root );
         }
     }
     if ( wrapper ) {
-        container.appendChild( fixCursor( wrapper ) );
+        container.appendChild( fixCursor( wrapper, root ) );
     }
     return container;
 }
 
-function split ( node, offset, stopNode ) {
+function split ( node, offset, stopNode, root ) {
     var nodeType = node.nodeType,
         parent, clone, next;
     if ( nodeType === TEXT_NODE && node !== stopNode ) {
-        return split( node.parentNode, node.splitText( offset ), stopNode );
+        return split(
+            node.parentNode, node.splitText( offset ), stopNode, root );
     }
     if ( nodeType === ELEMENT_NODE ) {
         if ( typeof( offset ) === 'number' ) {
@@ -471,7 +484,8 @@ function split ( node, offset, stopNode ) {
         }
 
         // Maintain li numbering if inside a quote.
-        if ( node.nodeName === 'OL' && getNearest( node, 'BLOCKQUOTE' ) ) {
+        if ( node.nodeName === 'OL' &&
+                getNearest( node, root, 'BLOCKQUOTE' ) ) {
             clone.start = ( +node.start || 1 ) + node.childNodes.length - 1;
         }
 
@@ -479,8 +493,8 @@ function split ( node, offset, stopNode ) {
         // of a node lower down the tree!
 
         // We need something in the element in order for the cursor to appear.
-        fixCursor( node );
-        fixCursor( clone );
+        fixCursor( node, root );
+        fixCursor( clone, root );
 
         // Inject clone after original node
         if ( next = node.nextSibling ) {
@@ -490,7 +504,7 @@ function split ( node, offset, stopNode ) {
         }
 
         // Keep on splitting up the tree
-        return split( parent, clone, stopNode );
+        return split( parent, clone, stopNode, root );
     }
     return offset;
 }
@@ -595,7 +609,7 @@ function mergeWithBlock ( block, next, range ) {
     }
 }
 
-function mergeContainers ( node ) {
+function mergeContainers ( node, root ) {
     var prev = node.previousSibling,
         first = node.firstChild,
         doc = node.ownerDocument,
@@ -621,15 +635,15 @@ function mergeContainers ( node ) {
         needsFix = !isContainer( node );
         prev.appendChild( empty( node ) );
         if ( needsFix ) {
-            fixContainer( prev );
+            fixContainer( prev, root );
         }
         if ( first ) {
-            mergeContainers( first );
+            mergeContainers( first, root );
         }
     } else if ( isListItem ) {
         prev = createElement( doc, 'DIV' );
         node.insertBefore( prev, first );
-        fixCursor( prev );
+        fixCursor( prev, root );
     }
 }
 
@@ -713,7 +727,7 @@ var insertNodeInRange = function ( range, node ) {
     range.setEnd( endContainer, endOffset );
 };
 
-var extractContentsOfRange = function ( range, common ) {
+var extractContentsOfRange = function ( range, common, root ) {
     var startContainer = range.startContainer,
         startOffset = range.startOffset,
         endContainer = range.endContainer,
@@ -727,8 +741,8 @@ var extractContentsOfRange = function ( range, common ) {
         common = common.parentNode;
     }
 
-    var endNode = split( endContainer, endOffset, common ),
-        startNode = split( startContainer, startOffset, common ),
+    var endNode = split( endContainer, endOffset, common, root ),
+        startNode = split( startContainer, startOffset, common, root ),
         frag = common.ownerDocument.createDocumentFragment(),
         next, before, after;
 
@@ -760,12 +774,12 @@ var extractContentsOfRange = function ( range, common ) {
     range.setStart( startContainer, startOffset );
     range.collapse( true );
 
-    fixCursor( common );
+    fixCursor( common, root );
 
     return frag;
 };
 
-var deleteContentsOfRange = function ( range ) {
+var deleteContentsOfRange = function ( range, root ) {
     // Move boundaries up as much as possible to reduce need to split.
     // But we need to check whether we've moved the boundary outside of a
     // block. If so, the entire block will be removed, so we shouldn't merge
@@ -778,7 +792,7 @@ var deleteContentsOfRange = function ( range ) {
             ( isInline( endBlock ) || isBlock( endBlock ) );
 
     // Remove selected range
-    var frag = extractContentsOfRange( range );
+    var frag = extractContentsOfRange( range, null, root );
 
     // Move boundaries back down tree so that they are inside the blocks.
     // If we don't do this, the range may be collapsed to a point between
@@ -787,8 +801,8 @@ var deleteContentsOfRange = function ( range ) {
 
     // If we split into two different blocks, merge the blocks.
     if ( needsMerge ) {
-        startBlock = getStartBlockOfRange( range );
-        endBlock = getEndBlockOfRange( range );
+        startBlock = getStartBlockOfRange( range, root );
+        endBlock = getEndBlockOfRange( range, root );
         if ( startBlock && endBlock && startBlock !== endBlock ) {
             mergeWithBlock( startBlock, endBlock, range );
         }
@@ -796,15 +810,14 @@ var deleteContentsOfRange = function ( range ) {
 
     // Ensure block has necessary children
     if ( startBlock ) {
-        fixCursor( startBlock );
+        fixCursor( startBlock, root );
     }
 
-    // Ensure body has a block-level element in it.
-    var body = range.endContainer.ownerDocument.body,
-        child = body.firstChild;
+    // Ensure root has a block-level element in it.
+    var child = root.firstChild;
     if ( !child || child.nodeName === 'BR' ) {
-        fixCursor( body );
-        range.selectNodeContents( body.firstChild );
+        fixCursor( root, root );
+        range.selectNodeContents( root.firstChild );
     } else {
         range.collapse( false );
     }
@@ -813,7 +826,7 @@ var deleteContentsOfRange = function ( range ) {
 
 // ---
 
-var insertTreeFragmentIntoRange = function ( range, frag ) {
+var insertTreeFragmentIntoRange = function ( range, frag, root ) {
     // Check if it's all inline content
     var allInline = true,
         children = frag.childNodes,
@@ -827,7 +840,7 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
 
     // Delete any selected content
     if ( !range.collapsed ) {
-        deleteContentsOfRange( range );
+        deleteContentsOfRange( range, root );
     }
 
     // Move range down into text nodes
@@ -839,11 +852,14 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
         range.collapse( false );
     } else {
         // Otherwise...
-        // 1. Split up to blockquote (if a parent) or body
+        // 1. Split up to blockquote (if a parent) or root
         var splitPoint = range.startContainer,
-            nodeAfterSplit = split( splitPoint, range.startOffset,
-                getNearest( splitPoint.parentNode, 'BLOCKQUOTE' ) ||
-                splitPoint.ownerDocument.body ),
+            nodeAfterSplit = split(
+                splitPoint,
+                range.startOffset,
+                getNearest( splitPoint.parentNode, root, 'BLOCKQUOTE' ) || root,
+                root
+            ),
             nodeBeforeSplit = nodeAfterSplit.previousSibling,
             startContainer = nodeBeforeSplit,
             startOffset = startContainer.childNodes.length,
@@ -879,15 +895,15 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
 
         // 3. Fix cursor then insert block(s) in the fragment
         node = frag;
-        while ( node = getNextBlock( node ) ) {
-            fixCursor( node );
+        while ( node = getNextBlock( node, root ) ) {
+            fixCursor( node, root );
         }
         parent.insertBefore( frag, nodeAfterSplit );
 
         // 4. Remove empty nodes created either side of split, then
         // merge containers at the edges.
         next = nodeBeforeSplit.nextSibling;
-        node = getPreviousBlock( next );
+        node = getPreviousBlock( next, root );
         if ( !/\S/.test( node.textContent ) ) {
             do {
                 parent = node.parentNode;
@@ -906,12 +922,12 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
         }
         // Merge inserted containers with edges of split
         if ( isContainer( next ) ) {
-            mergeContainers( next );
+            mergeContainers( next, root );
         }
 
         prev = nodeAfterSplit.previousSibling;
         node = isBlock( nodeAfterSplit ) ?
-            nodeAfterSplit : getNextBlock( nodeAfterSplit );
+            nodeAfterSplit : getNextBlock( nodeAfterSplit, root );
         if ( !/\S/.test( node.textContent ) ) {
             do {
                 parent = node.parentNode;
@@ -929,7 +945,7 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
         }
         // Merge inserted containers with edges of split
         if ( nodeAfterSplit && isContainer( nodeAfterSplit ) ) {
-            mergeContainers( nodeAfterSplit );
+            mergeContainers( nodeAfterSplit, root );
         }
 
         range.setStart( startContainer, startOffset );
@@ -1041,18 +1057,18 @@ var moveRangeBoundariesUpTree = function ( range, common ) {
 
 // Returns the first block at least partially contained by the range,
 // or null if no block is contained by the range.
-var getStartBlockOfRange = function ( range ) {
+var getStartBlockOfRange = function ( range, root ) {
     var container = range.startContainer,
         block;
 
     // If inline, get the containing block.
     if ( isInline( container ) ) {
-        block = getPreviousBlock( container );
+        block = getPreviousBlock( container, root );
     } else if ( isBlock( container ) ) {
         block = container;
     } else {
         block = getNodeBefore( container, range.startOffset );
-        block = getNextBlock( block );
+        block = getNextBlock( block, root );
     }
     // Check the block actually intersects the range
     return block && isNodeContainedInRange( range, block, true ) ? block : null;
@@ -1060,25 +1076,24 @@ var getStartBlockOfRange = function ( range ) {
 
 // Returns the last block at least partially contained by the range,
 // or null if no block is contained by the range.
-var getEndBlockOfRange = function ( range ) {
+var getEndBlockOfRange = function ( range, root ) {
     var container = range.endContainer,
         block, child;
 
     // If inline, get the containing block.
     if ( isInline( container ) ) {
-        block = getPreviousBlock( container );
+        block = getPreviousBlock( container, root );
     } else if ( isBlock( container ) ) {
         block = container;
     } else {
         block = getNodeAfter( container, range.endOffset );
         if ( !block ) {
-            block = container.ownerDocument.body;
+            block = root;
             while ( child = block.lastChild ) {
                 block = child;
             }
         }
-        block = getPreviousBlock( block );
-
+        block = getPreviousBlock( block, root );
     }
     // Check the block actually intersects the range
     return block && isNodeContainedInRange( range, block, true ) ? block : null;
@@ -1093,7 +1108,7 @@ var contentWalker = new TreeWalker( null,
     }
 );
 
-var rangeDoesStartAtBlockBoundary = function ( range ) {
+var rangeDoesStartAtBlockBoundary = function ( range, root ) {
     var startContainer = range.startContainer,
         startOffset = range.startOffset;
 
@@ -1109,12 +1124,12 @@ var rangeDoesStartAtBlockBoundary = function ( range ) {
     }
 
     // Otherwise, look for any previous content in the same block.
-    contentWalker.root = getStartBlockOfRange( range );
+    contentWalker.root = getStartBlockOfRange( range, root );
 
     return !contentWalker.previousNode();
 };
 
-var rangeDoesEndAtBlockBoundary = function ( range ) {
+var rangeDoesEndAtBlockBoundary = function ( range, root ) {
     var endContainer = range.endContainer,
         endOffset = range.endOffset,
         length;
@@ -1133,14 +1148,14 @@ var rangeDoesEndAtBlockBoundary = function ( range ) {
     }
 
     // Otherwise, look for any further content in the same block.
-    contentWalker.root = getEndBlockOfRange( range );
+    contentWalker.root = getEndBlockOfRange( range, root );
 
     return !contentWalker.nextNode();
 };
 
-var expandRangeToBlockBoundaries = function ( range ) {
-    var start = getStartBlockOfRange( range ),
-        end = getEndBlockOfRange( range ),
+var expandRangeToBlockBoundaries = function ( range, root ) {
+    var start = getStartBlockOfRange( range, root ),
+        end = getEndBlockOfRange( range, root ),
         parent;
 
     if ( start && end ) {
@@ -1214,7 +1229,7 @@ var onKey = function ( event ) {
         // Record undo checkpoint.
         this.saveUndoState( range );
         // Delete the selection
-        deleteContentsOfRange( range );
+        deleteContentsOfRange( range, this._root );
         this._ensureBottomLine();
         this.setSelection( range );
         this._updatePath( range, true );
@@ -1271,17 +1286,17 @@ var afterDelete = function ( self, range ) {
             parent.removeChild( node );
             // Fix cursor in block
             if ( !isBlock( parent ) ) {
-                parent = getPreviousBlock( parent );
+                parent = getPreviousBlock( parent, self._root );
             }
-            fixCursor( parent );
+            fixCursor( parent, self._root );
             // Move cursor into text node
             moveRangeBoundariesDownTree( range );
         }
         // If you delete the last character in the sole <div> in Chrome,
         // it removes the div and replaces it with just a <br> inside the
-        // body. Detach the <br>; the _ensureBottomLine call will insert a new
+        // root. Detach the <br>; the _ensureBottomLine call will insert a new
         // block.
-        if ( node.nodeName === 'BODY' &&
+        if ( node === self._root &&
                 ( node = node.firstChild ) && node.nodeName === 'BR' ) {
             detach( node );
         }
@@ -1295,6 +1310,7 @@ var afterDelete = function ( self, range ) {
 
 var keyHandlers = {
     enter: function ( self, event, range ) {
+        var root = self._root;
         var block, parent, nodeAfterSplit;
 
         // We handle this ourselves
@@ -1311,10 +1327,10 @@ var keyHandlers = {
         // Selected text is overwritten, therefore delete the contents
         // to collapse selection.
         if ( !range.collapsed ) {
-            deleteContentsOfRange( range );
+            deleteContentsOfRange( range, root );
         }
 
-        block = getStartBlockOfRange( range );
+        block = getStartBlockOfRange( range, root );
 
         // If this is a malformed bit of document or in a table;
         // just play it safe and insert a <br>.
@@ -1327,17 +1343,18 @@ var keyHandlers = {
         }
 
         // If in a list, we'll split the LI instead.
-        if ( parent = getNearest( block, 'LI' ) ) {
+        if ( parent = getNearest( block, root, 'LI' ) ) {
             block = parent;
         }
 
         if ( !block.textContent ) {
             // Break list
-            if ( getNearest( block, 'UL' ) || getNearest( block, 'OL' ) ) {
+            if ( getNearest( block, root, 'UL' ) ||
+                    getNearest( block, root, 'OL' ) ) {
                 return self.modifyBlocks( decreaseListLevel, range );
             }
             // Break blockquote
-            else if ( getNearest( block, 'BLOCKQUOTE' ) ) {
+            else if ( getNearest( block, root, 'BLOCKQUOTE' ) ) {
                 return self.modifyBlocks( removeBlockQuote, range );
             }
         }
@@ -1350,7 +1367,7 @@ var keyHandlers = {
         // block
         removeZWS( block );
         removeEmptyInlines( block );
-        fixCursor( block );
+        fixCursor( block, root );
 
         // Focus cursor
         // If there's a <b>/<i> etc. at the beginning of the split
@@ -1393,27 +1410,28 @@ var keyHandlers = {
         self._updatePath( range, true );
     },
     backspace: function ( self, event, range ) {
+        var root = self._root;
         self._removeZWS();
         // Record undo checkpoint.
         self.saveUndoState( range );
         // If not collapsed, delete contents
         if ( !range.collapsed ) {
             event.preventDefault();
-            deleteContentsOfRange( range );
+            deleteContentsOfRange( range, root );
             afterDelete( self, range );
         }
         // If at beginning of block, merge with previous
-        else if ( rangeDoesStartAtBlockBoundary( range ) ) {
+        else if ( rangeDoesStartAtBlockBoundary( range, root ) ) {
             event.preventDefault();
-            var current = getStartBlockOfRange( range );
+            var current = getStartBlockOfRange( range, root );
             var previous;
             if ( !current ) {
                 return;
             }
             // In case inline data has somehow got between blocks.
-            fixContainer( current.parentNode );
+            fixContainer( current.parentNode, root );
             // Now get previous block
-            previous = getPreviousBlock( current );
+            previous = getPreviousBlock( current, root );
             // Must not be at the very beginning of the text area.
             if ( previous ) {
                 // If not editable, just delete whole block.
@@ -1430,7 +1448,7 @@ var keyHandlers = {
                     current = current.parentNode;
                 }
                 if ( current && ( current = current.nextSibling ) ) {
-                    mergeContainers( current );
+                    mergeContainers( current, root );
                 }
                 self.setSelection( range );
             }
@@ -1438,12 +1456,12 @@ var keyHandlers = {
             // to break lists/blockquote.
             else if ( current ) {
                 // Break list
-                if ( getNearest( current, 'UL' ) ||
-                        getNearest( current, 'OL' ) ) {
+                if ( getNearest( current, root, 'UL' ) ||
+                        getNearest( current, root, 'OL' ) ) {
                     return self.modifyBlocks( decreaseListLevel, range );
                 }
                 // Break blockquote
-                else if ( getNearest( current, 'BLOCKQUOTE' ) ) {
+                else if ( getNearest( current, root, 'BLOCKQUOTE' ) ) {
                     return self.modifyBlocks( decreaseBlockQuoteLevel, range );
                 }
                 self.setSelection( range );
@@ -1458,6 +1476,7 @@ var keyHandlers = {
         }
     },
     'delete': function ( self, event, range ) {
+        var root = self._root;
         var current, next, originalRange,
             cursorContainer, cursorOffset, nodeAfterCursor;
         self._removeZWS();
@@ -1466,20 +1485,20 @@ var keyHandlers = {
         // If not collapsed, delete contents
         if ( !range.collapsed ) {
             event.preventDefault();
-            deleteContentsOfRange( range );
+            deleteContentsOfRange( range, root );
             afterDelete( self, range );
         }
         // If at end of block, merge next into this block
-        else if ( rangeDoesEndAtBlockBoundary( range ) ) {
+        else if ( rangeDoesEndAtBlockBoundary( range, root ) ) {
             event.preventDefault();
-            current = getStartBlockOfRange( range );
+            current = getStartBlockOfRange( range, root );
             if ( !current ) {
                 return;
             }
             // In case inline data has somehow got between blocks.
-            fixContainer( current.parentNode );
+            fixContainer( current.parentNode, root );
             // Now get next block
-            next = getNextBlock( current );
+            next = getNextBlock( current, root );
             // Must not be at the very end of the text area.
             if ( next ) {
                 // If not editable, just delete whole block.
@@ -1496,7 +1515,7 @@ var keyHandlers = {
                     next = next.parentNode;
                 }
                 if ( next && ( next = next.nextSibling ) ) {
-                    mergeContainers( next );
+                    mergeContainers( next, root );
                 }
                 self.setSelection( range );
                 self._updatePath( range, true );
@@ -1509,7 +1528,7 @@ var keyHandlers = {
             // delete it ourselves, because the browser won't if it is not
             // inline.
             originalRange = range.cloneRange();
-            moveRangeBoundariesUpTree( range, self._body );
+            moveRangeBoundariesUpTree( range, self._root );
             cursorContainer = range.endContainer;
             cursorOffset = range.endOffset;
             if ( cursorContainer.nodeType === ELEMENT_NODE ) {
@@ -1527,11 +1546,12 @@ var keyHandlers = {
         }
     },
     tab: function ( self, event, range ) {
+        var root = self._root;
         var node, parent;
         self._removeZWS();
         // If no selection and at start of block
-        if ( range.collapsed && rangeDoesStartAtBlockBoundary( range ) ) {
-            node = getStartBlockOfRange( range );
+        if ( range.collapsed && rangeDoesStartAtBlockBoundary( range, root ) ) {
+            node = getStartBlockOfRange( range, root );
             // Iterate through the block's parents
             while ( parent = node.parentNode ) {
                 // If we find a UL or OL (so are in a list, node must be an LI)
@@ -1549,12 +1569,15 @@ var keyHandlers = {
         }
     },
     'shift-tab': function ( self, event, range ) {
+        var root = self._root;
+        var node;
         self._removeZWS();
         // If no selection and at start of block
-        if ( range.collapsed && rangeDoesStartAtBlockBoundary( range ) ) {
+        if ( range.collapsed && rangeDoesStartAtBlockBoundary( range, root ) ) {
             // Break list
-            var node = range.startContainer;
-            if ( getNearest( node, 'UL' ) || getNearest( node, 'OL' ) ) {
+            node = range.startContainer;
+            if ( getNearest( node, root, 'UL' ) ||
+                    getNearest( node, root, 'OL' ) ) {
                 event.preventDefault();
                 self.modifyBlocks( decreaseListLevel, range );
             }
@@ -1905,8 +1928,8 @@ var cleanTree = function cleanTree ( node ) {
 
 // ---
 
-var removeEmptyInlines = function removeEmptyInlines ( root ) {
-    var children = root.childNodes,
+var removeEmptyInlines = function removeEmptyInlines ( node ) {
+    var children = node.childNodes,
         l = children.length,
         child;
     while ( l-- ) {
@@ -1914,10 +1937,10 @@ var removeEmptyInlines = function removeEmptyInlines ( root ) {
         if ( child.nodeType === ELEMENT_NODE && !isLeaf( child ) ) {
             removeEmptyInlines( child );
             if ( isInline( child ) && !child.firstChild ) {
-                root.removeChild( child );
+                node.removeChild( child );
             }
         } else if ( child.nodeType === TEXT_NODE && !child.data ) {
-            root.removeChild( child );
+            node.removeChild( child );
         }
     }
 };
@@ -1947,8 +1970,8 @@ var isLineBreak = function ( br ) {
 // line breaks by wrapping the inline text in a <div>. Browsers that want <br>
 // elements at the end of each block will then have them added back in a later
 // fixCursor method call.
-var cleanupBRs = function ( root ) {
-    var brs = root.querySelectorAll( 'BR' ),
+var cleanupBRs = function ( node, root ) {
+    var brs = node.querySelectorAll( 'BR' ),
         brBreaksLine = [],
         l = brs.length,
         i, br, parent;
@@ -1973,7 +1996,7 @@ var cleanupBRs = function ( root ) {
         if ( !brBreaksLine[l] ) {
             detach( br );
         } else if ( !isInline( parent ) ) {
-            fixContainer( parent );
+            fixContainer( parent, root );
         }
     }
 };
@@ -1982,7 +2005,7 @@ var onCut = function ( event ) {
     var clipboardData = event.clipboardData;
     var range = this.getSelection();
     var node = this.createElement( 'div' );
-    var body = this._body;
+    var root = this._root;
     var self = this;
 
     // Save undo checkpoint
@@ -1990,8 +2013,8 @@ var onCut = function ( event ) {
 
     // Edge only seems to support setting plain text as of 2016-03-11.
     if ( !isEdge && clipboardData ) {
-        moveRangeBoundariesUpTree( range, body );
-        node.appendChild( deleteContentsOfRange( range, body ) );
+        moveRangeBoundariesUpTree( range, root );
+        node.appendChild( deleteContentsOfRange( range, root ) );
         clipboardData.setData( 'text/html', node.innerHTML );
         clipboardData.setData( 'text/plain',
             node.innerText || node.textContent );
@@ -1999,7 +2022,7 @@ var onCut = function ( event ) {
     } else {
         setTimeout( function () {
             try {
-                // If all content removed, ensure div at start of body.
+                // If all content removed, ensure div at start of root.
                 self._ensureBottomLine();
             } catch ( error ) {
                 self.didError( error );
@@ -2119,21 +2142,18 @@ var onPaste = function ( event ) {
 
     this._awaitingPaste = true;
 
-    var body = this._body,
+    var body = this._doc.body,
         range = this.getSelection(),
         startContainer = range.startContainer,
         startOffset = range.startOffset,
         endContainer = range.endContainer,
-        endOffset = range.endOffset,
-        startBlock = getStartBlockOfRange( range );
+        endOffset = range.endOffset;
 
     // We need to position the pasteArea in the visible portion of the screen
     // to stop the browser auto-scrolling.
     var pasteArea = this.createElement( 'DIV', {
-        style: 'position: absolute; overflow: hidden; top:' +
-            ( body.scrollTop +
-                ( startBlock ? startBlock.getBoundingClientRect().top : 0 ) ) +
-            'px; right: 150%; width: 1px; height: 1px;'
+        contenteditable: 'true',
+        style: 'position:fixed; overflow:hidden; top:0; right:100%; width:1px; height:1px;'
     });
     body.appendChild( pasteArea );
     range.selectNodeContents( pasteArea );
@@ -2208,14 +2228,17 @@ function mergeObjects ( base, extras ) {
     return base;
 }
 
-function Squire ( doc, config ) {
+function Squire ( root, config ) {
+    if ( root.nodeType === DOCUMENT_NODE ) {
+        root = root.body;
+    }
+    var doc = root.ownerDocument;
     var win = doc.defaultView;
-    var body = doc.body;
     var mutation;
 
     this._win = win;
     this._doc = doc;
-    this._body = body;
+    this._root = root;
 
     this._events = {};
 
@@ -2236,9 +2259,6 @@ function Squire ( doc, config ) {
     this.addEventListener( 'keyup', this._updatePathOnEvent );
     this.addEventListener( 'mouseup', this._updatePathOnEvent );
 
-    win.addEventListener( 'focus', this, false );
-    win.addEventListener( 'blur', this, false );
-
     this._undoIndex = -1;
     this._undoStack = [];
     this._undoStackLength = 0;
@@ -2247,7 +2267,7 @@ function Squire ( doc, config ) {
 
     if ( canObserveMutations ) {
         mutation = new MutationObserver( this._docWasChanged.bind( this ) );
-        mutation.observe( body, {
+        mutation.observe( root, {
             childList: true,
             attributes: true,
             characterData: true,
@@ -2303,7 +2323,7 @@ function Squire ( doc, config ) {
         };
     }
 
-    body.setAttribute( 'contenteditable', 'true' );
+    root.setAttribute( 'contenteditable', 'true' );
 
     // Remove Firefox's built-in controls
     try {
@@ -2347,7 +2367,8 @@ proto.createElement = function ( tag, props, children ) {
 proto.createDefaultBlock = function ( children ) {
     var config = this._config;
     return fixCursor(
-        this.createElement( config.blockTag, config.blockAttributes, children )
+        this.createElement( config.blockTag, config.blockAttributes, children ),
+        this._root
     );
 };
 
@@ -2365,8 +2386,8 @@ proto.getDocument = function () {
 // document node, since these events are fired in a custom manner by the
 // editor code.
 var customEvents = {
-    focus: 1, blur: 1,
-    pathChange: 1, select: 1, input: 1, undoStateChange: 1
+    pathChange: 1, select: 1, input: 1,
+    undoStateChange: 1, scrollPointIntoView: 1
 };
 
 proto.fireEvent = function ( type, event ) {
@@ -2400,15 +2421,12 @@ proto.fireEvent = function ( type, event ) {
 };
 
 proto.destroy = function () {
-    var win = this._win,
-        doc = this._doc,
+    var root = this._root,
         events = this._events,
         type;
-    win.removeEventListener( 'focus', this, false );
-    win.removeEventListener( 'blur', this, false );
     for ( type in events ) {
         if ( !customEvents[ type ] ) {
-            doc.removeEventListener( type, this, true );
+            root.removeEventListener( type, this, true );
         }
     }
     if ( this._mutation ) {
@@ -2438,7 +2456,7 @@ proto.addEventListener = function ( type, fn ) {
     if ( !handlers ) {
         handlers = this._events[ type ] = [];
         if ( !customEvents[ type ] ) {
-            this._doc.addEventListener( type, this, true );
+            this._root.addEventListener( type, this, true );
         }
     }
     handlers.push( fn );
@@ -2458,7 +2476,7 @@ proto.removeEventListener = function ( type, fn ) {
         if ( !handlers.length ) {
             delete this._events[ type ];
             if ( !customEvents[ type ] ) {
-                this._doc.removeEventListener( type, this, false );
+                this._root.removeEventListener( type, this, true );
             }
         }
     }
@@ -2495,26 +2513,18 @@ proto.scrollRangeIntoView = function ( range ) {
         parent.removeChild( node );
         parent.normalize();
     }
-    if ( !rect ) {
-        return;
-    }
-    // Then check and scroll
-    var win = this._win;
-    var height = win.innerHeight;
-    var top = rect.top;
-    if ( top > height ) {
-        win.scrollBy( 0, top - height + 20 );
-    }
     // And fire event for integrations to use
-    this.fireEvent( 'scrollPointIntoView', {
-        x: rect.left,
-        y: top
-    });
+    if ( rect ) {
+        this.fireEvent( 'scrollPointIntoView', {
+            x: rect.left,
+            y: rect.top
+        });
+    }
 };
 
 proto._moveCursorTo = function ( toStart ) {
-    var body = this._body,
-        range = this._createRange( body, toStart ? 0 : body.childNodes.length );
+    var root = this._root,
+        range = this._createRange( root, toStart ? 0 : root.childNodes.length );
     moveRangeBoundariesDownTree( range );
     this.setSelection( range );
     return this;
@@ -2550,8 +2560,9 @@ proto.setSelection = function ( range ) {
 };
 
 proto.getSelection = function () {
-    var sel = getWindowSelection( this ),
-        selection, startContainer, endContainer;
+    var sel = getWindowSelection( this );
+    var root = this._root;
+    var selection, startContainer, endContainer;
     if ( sel && sel.rangeCount ) {
         selection  = sel.getRangeAt( 0 ).cloneRange();
         startContainer = selection.startContainer;
@@ -2563,12 +2574,15 @@ proto.getSelection = function () {
         if ( endContainer && isLeaf( endContainer ) ) {
             selection.setEndBefore( endContainer );
         }
+    }
+    if ( selection &&
+            isOrContains( root, selection.commonAncestorContainer ) ) {
         this._lastSelection = selection;
     } else {
         selection = this._lastSelection;
     }
     if ( !selection ) {
-        selection = this._createRange( this._body.firstChild, 0 );
+        selection = this._createRange( root.firstChild, 0 );
     }
     return selection;
 };
@@ -2654,7 +2668,7 @@ proto._removeZWS = function () {
     if ( !this._hasZWS ) {
         return;
     }
-    removeZWS( this._body );
+    removeZWS( this._root );
     this._hasZWS = false;
 };
 
@@ -2669,7 +2683,7 @@ proto._updatePath = function ( range, force ) {
         this._lastAnchorNode = anchor;
         this._lastFocusNode = focus;
         newPath = ( anchor && focus ) ? ( anchor === focus ) ?
-            getPath( focus ) : '(selection)' : '';
+            getPath( focus, this._root ) : '(selection)' : '';
         if ( this._path !== newPath ) {
             this._path = newPath;
             this.fireEvent( 'pathChange', { path: newPath } );
@@ -2687,26 +2701,12 @@ proto._updatePathOnEvent = function () {
 // --- Focus ---
 
 proto.focus = function () {
-    // FF seems to need the body to be focussed (at least on first load).
-    // Chrome also now needs body to be focussed in order to show the cursor
-    // (otherwise it is focussed, but the cursor doesn't appear).
-    // Opera (Presto-variant) however will lose the selection if you call this!
-    if ( !isPresto ) {
-        this._body.focus();
-    }
-    this._win.focus();
+    this._root.focus();
     return this;
 };
 
 proto.blur = function () {
-    // IE will remove the whole browser window from focus if you call
-    // win.blur() or body.blur(), so instead we call top.focus() to focus
-    // the top frame, thus blurring this frame. This works in everything
-    // except FF, so we need to call body.blur() in that as well.
-    if ( isGecko ) {
-        this._body.blur();
-    }
-    top.focus();
+    this._root.blur();
     return this;
 };
 
@@ -2745,9 +2745,9 @@ proto._saveRangeToBookmark = function ( range ) {
 };
 
 proto._getRangeAndRemoveBookmark = function ( range ) {
-    var doc = this._doc,
-        start = doc.getElementById( startSelectionId ),
-        end = doc.getElementById( endSelectionId );
+    var root = this._root,
+        start = root.querySelector( '#' + startSelectionId ),
+        end = root.querySelector( '#' + endSelectionId );
 
     if ( start && end ) {
         var startContainer = start.parentNode,
@@ -2775,7 +2775,7 @@ proto._getRangeAndRemoveBookmark = function ( range ) {
         }
 
         if ( !range ) {
-            range = doc.createRange();
+            range = this._doc.createRange();
         }
         range.setStart( _range.startContainer, _range.startOffset );
         range.setEnd( _range.endContainer, _range.endOffset );
@@ -2924,27 +2924,28 @@ proto.hasFormat = function ( tag, attributes, range ) {
 
     // If the common ancestor is inside the tag we require, we definitely
     // have the format.
-    var root = range.commonAncestorContainer,
-        walker, node;
-    if ( getNearest( root, tag, attributes ) ) {
+    var root = this._root;
+    var common = range.commonAncestorContainer;
+    var walker, node;
+    if ( getNearest( common, root, tag, attributes ) ) {
         return true;
     }
 
     // If common ancestor is a text node and doesn't have the format, we
     // definitely don't have it.
-    if ( root.nodeType === TEXT_NODE ) {
+    if ( common.nodeType === TEXT_NODE ) {
         return false;
     }
 
     // Otherwise, check each text node at least partially contained within
     // the selection and make sure all of them have the format we want.
-    walker = new TreeWalker( root, SHOW_TEXT, function ( node ) {
+    walker = new TreeWalker( common, SHOW_TEXT, function ( node ) {
         return isNodeContainedInRange( range, node, true );
     }, false );
 
     var seenNode = false;
     while ( node = walker.nextNode() ) {
-        if ( !getNearest( node, tag, attributes ) ) {
+        if ( !getNearest( node, root, tag, attributes ) ) {
             return false;
         }
         seenNode = true;
@@ -3003,11 +3004,12 @@ proto.getFontInfo = function ( range ) {
 proto._addFormat = function ( tag, attributes, range ) {
     // If the range is collapsed we simply insert the node by wrapping
     // it round the range and focus it.
+    var root = this._root;
     var el, walker, startContainer, endContainer, startOffset, endOffset,
         node, needsFormat;
 
     if ( range.collapsed ) {
-        el = fixCursor( this.createElement( tag, attributes ) );
+        el = fixCursor( this.createElement( tag, attributes ), root );
         insertNodeInRange( range, el );
         range.setStart( el.firstChild, el.firstChild.length );
         range.collapse( true );
@@ -3060,7 +3062,7 @@ proto._addFormat = function ( tag, attributes, range ) {
 
         do {
             node = walker.currentNode;
-            needsFormat = !getNearest( node, tag, attributes );
+            needsFormat = !getNearest( node, root, tag, attributes );
             if ( needsFormat ) {
                 // <br> can never be a container node, so must have a text node
                 // if node == (end|start)Container
@@ -3258,7 +3260,7 @@ var tagAfterSplit = {
 var splitBlock = function ( self, block, node, offset ) {
     var splitTag = tagAfterSplit[ block.nodeName ],
         splitProperties = null,
-        nodeAfterSplit = split( node, offset, block.parentNode ),
+        nodeAfterSplit = split( node, offset, block.parentNode, self._root ),
         config = self._config;
 
     if ( !splitTag ) {
@@ -3290,12 +3292,13 @@ proto.forEachBlock = function ( fn, mutates, range ) {
         this.saveUndoState( range );
     }
 
-    var start = getStartBlockOfRange( range ),
-        end = getEndBlockOfRange( range );
+    var root = this._root;
+    var start = getStartBlockOfRange( range, root );
+    var end = getEndBlockOfRange( range, root );
     if ( start && end ) {
         do {
             if ( fn( start ) || start === end ) { break; }
-        } while ( start = getNextBlock( start ) );
+        } while ( start = getNextBlock( start, root ) );
     }
 
     if ( mutates ) {
@@ -3324,23 +3327,24 @@ proto.modifyBlocks = function ( modify, range ) {
         this._recordUndoState( range );
     }
 
+    var root = this._root;
+    var frag;
+
     // 2. Expand range to block boundaries
-    expandRangeToBlockBoundaries( range );
+    expandRangeToBlockBoundaries( range, root );
 
     // 3. Remove range.
-    var body = this._body,
-        frag;
-    moveRangeBoundariesUpTree( range, body );
-    frag = extractContentsOfRange( range, body );
+    moveRangeBoundariesUpTree( range, root );
+    frag = extractContentsOfRange( range, root, root );
 
     // 4. Modify tree of fragment and reinsert.
     insertNodeInRange( range, modify.call( this, frag ) );
 
     // 5. Merge containers at edges
     if ( range.endOffset < range.endContainer.childNodes.length ) {
-        mergeContainers( range.endContainer.childNodes[ range.endOffset ] );
+        mergeContainers( range.endContainer.childNodes[ range.endOffset ], root );
     }
-    mergeContainers( range.startContainer.childNodes[ range.startOffset ] );
+    mergeContainers( range.startContainer.childNodes[ range.startOffset ], root );
 
     // 6. Restore selection
     this._getRangeAndRemoveBookmark( range );
@@ -3363,9 +3367,10 @@ var increaseBlockQuoteLevel = function ( frag ) {
 };
 
 var decreaseBlockQuoteLevel = function ( frag ) {
+    var root = this._root;
     var blockquotes = frag.querySelectorAll( 'blockquote' );
     Array.prototype.filter.call( blockquotes, function ( el ) {
-        return !getNearest( el.parentNode, 'BLOCKQUOTE' );
+        return !getNearest( el.parentNode, root, 'BLOCKQUOTE' );
     }).forEach( function ( el ) {
         replaceWith( el, empty( el ) );
     });
@@ -3386,7 +3391,7 @@ var removeBlockQuote = function (/* frag */) {
 };
 
 var makeList = function ( self, frag, type ) {
-    var walker = getBlockWalker( frag ),
+    var walker = getBlockWalker( frag, self._root ),
         node, tag, prev, newLi,
         tagAttributes = self._config.tagAttributes,
         listAttrs = tagAttributes[ type.toLowerCase() ],
@@ -3449,7 +3454,7 @@ var removeList = function ( frag ) {
             child = children[ll];
             replaceWith( child, empty( child ) );
         }
-        fixContainer( listFrag );
+        fixContainer( listFrag, this._root );
         replaceWith( list, listFrag );
     }
     return frag;
@@ -3485,6 +3490,7 @@ var increaseListLevel = function ( frag ) {
 };
 
 var decreaseListLevel = function ( frag ) {
+    var root = this._root;
     var items = frag.querySelectorAll( 'LI' );
     Array.prototype.filter.call( items, function ( el ) {
         return !isContainer( el.firstChild );
@@ -3495,7 +3501,7 @@ var decreaseListLevel = function ( frag ) {
             node = first,
             next;
         if ( item.previousSibling ) {
-            parent = split( parent, item, newParent );
+            parent = split( parent, item, newParent, root );
         }
         while ( node ) {
             next = node.nextSibling;
@@ -3506,7 +3512,7 @@ var decreaseListLevel = function ( frag ) {
             node = next;
         }
         if ( newParent.nodeName === 'LI' && first.previousSibling ) {
-            split( newParent, first, newParent.parentNode );
+            split( newParent, first, newParent.parentNode, root );
         }
         while ( item !== frag && !item.childNodes.length ) {
             parent = item.parentNode;
@@ -3514,16 +3520,16 @@ var decreaseListLevel = function ( frag ) {
             item = parent;
         }
     }, this );
-    fixContainer( frag );
+    fixContainer( frag, root );
     return frag;
 };
 
 proto._ensureBottomLine = function () {
-    var body = this._body,
-        last = body.lastElementChild;
+    var root = this._root;
+    var last = root.lastElementChild;
     if ( !last ||
             last.nodeName !== this._config.blockTag || !isBlock( last ) ) {
-        body.appendChild( this.createDefaultBlock() );
+        root.appendChild( this.createDefaultBlock() );
     }
 };
 
@@ -3537,27 +3543,29 @@ proto.setKeyHandler = function ( key, fn ) {
 // --- Get/Set data ---
 
 proto._getHTML = function () {
-    return this._body.innerHTML;
+    return this._root.innerHTML;
 };
 
 proto._setHTML = function ( html ) {
-    var node = this._body;
+    var root = this._root;
+    var node = root;
     node.innerHTML = html;
     do {
-        fixCursor( node );
-    } while ( node = getNextBlock( node ) );
+        fixCursor( node, root );
+    } while ( node = getNextBlock( node, root ) );
     this._ignoreChange = true;
 };
 
 proto.getHTML = function ( withBookMark ) {
     var brs = [],
-        node, fixer, html, l, range;
+        root, node, fixer, html, l, range;
     if ( withBookMark && ( range = this.getSelection() ) ) {
         this._saveRangeToBookmark( range );
     }
     if ( useTextFixer ) {
-        node = this._body;
-        while ( node = getNextBlock( node ) ) {
+        root = this._root;
+        node = root;
+        while ( node = getNextBlock( node, root ) ) {
             if ( !node.textContent && !node.querySelector( 'BR' ) ) {
                 fixer = this.createElement( 'BR' );
                 node.appendChild( fixer );
@@ -3579,37 +3587,37 @@ proto.getHTML = function ( withBookMark ) {
 };
 
 proto.setHTML = function ( html ) {
-    var frag = this._doc.createDocumentFragment(),
-        div = this.createElement( 'DIV' ),
-        child;
+    var frag = this._doc.createDocumentFragment();
+    var div = this.createElement( 'DIV' );
+    var root = this._root;
+    var child;
 
     // Parse HTML into DOM tree
     div.innerHTML = html;
     frag.appendChild( empty( div ) );
 
     cleanTree( frag );
-    cleanupBRs( frag );
+    cleanupBRs( frag, root );
 
-    fixContainer( frag );
+    fixContainer( frag, root );
 
     // Fix cursor
     var node = frag;
-    while ( node = getNextBlock( node ) ) {
-        fixCursor( node );
+    while ( node = getNextBlock( node, root ) ) {
+        fixCursor( node, root );
     }
 
     // Don't fire an input event
     this._ignoreChange = true;
 
-    // Remove existing body children
-    var body = this._body;
-    while ( child = body.lastChild ) {
-        body.removeChild( child );
+    // Remove existing root children
+    while ( child = root.lastChild ) {
+        root.removeChild( child );
     }
 
     // And insert new content
-    body.appendChild( frag );
-    fixCursor( body );
+    root.appendChild( frag );
+    fixCursor( root, root );
 
     // Reset the undo stack
     this._undoIndex = -1;
@@ -3619,17 +3627,13 @@ proto.setHTML = function ( html ) {
 
     // Record undo state
     var range = this._getRangeAndRemoveBookmark() ||
-        this._createRange( body.firstChild, 0 );
+        this._createRange( root.firstChild, 0 );
     this.saveUndoState( range );
     // IE will also set focus when selecting text so don't use
     // setSelection. Instead, just store it in lastSelection, so if
     // anything calls getSelection before first focus, we have a range
     // to return.
-    if ( losesSelectionOnBlur ) {
-        this._lastSelection = range;
-    } else {
-        this.setSelection( range );
-    }
+    this._lastSelection = range;
     this._updatePath( range, true );
 
     return this;
@@ -3643,25 +3647,25 @@ proto.insertElement = function ( el, range ) {
         range.setStartAfter( el );
     } else {
         // Get containing block node.
-        var body = this._body,
-            splitNode = getStartBlockOfRange( range ) || body,
-            parent, nodeAfterSplit;
+        var root = this._root;
+        var splitNode = getStartBlockOfRange( range, root ) || root;
+        var parent, nodeAfterSplit;
         // While at end of container node, move up DOM tree.
-        while ( splitNode !== body && !splitNode.nextSibling ) {
+        while ( splitNode !== root && !splitNode.nextSibling ) {
             splitNode = splitNode.parentNode;
         }
-        // If in the middle of a container node, split up to body.
-        if ( splitNode !== body ) {
+        // If in the middle of a container node, split up to root.
+        if ( splitNode !== root ) {
             parent = splitNode.parentNode;
-            nodeAfterSplit = split( parent, splitNode.nextSibling, body );
+            nodeAfterSplit = split( parent, splitNode.nextSibling, root, root );
         }
         if ( nodeAfterSplit ) {
-            body.insertBefore( el, nodeAfterSplit );
+            root.insertBefore( el, nodeAfterSplit );
         } else {
-            body.appendChild( el );
+            root.appendChild( el );
             // Insert blank line below block.
             nodeAfterSplit = this.createDefaultBlock();
-            body.appendChild( nodeAfterSplit );
+            root.appendChild( nodeAfterSplit );
         }
         range.setStart( nodeAfterSplit, 0 );
         range.setEnd( nodeAfterSplit, 0 );
@@ -3683,11 +3687,11 @@ proto.insertImage = function ( src, attributes ) {
 
 var linkRegExp = /\b((?:(?:ht|f)tps?:\/\/|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,}\/)(?:[^\s()<>]+|\([^\s()<>]+\))+(?:\((?:[^\s()<>]+|(?:\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))|([\w\-.%+]+@(?:[\w\-]+\.)+[A-Z]{2,}\b)/i;
 
-var addLinks = function ( frag ) {
+var addLinks = function ( frag, root ) {
     var doc = frag.ownerDocument,
         walker = new TreeWalker( frag, SHOW_TEXT,
                 function ( node ) {
-            return !getNearest( node, 'A' );
+            return !getNearest( node, root, 'A' );
         }, false ),
         node, data, parent, match, index, endIndex, child;
     while ( node = walker.nextNode() ) {
@@ -3729,6 +3733,7 @@ proto.insertHTML = function ( html, isPaste ) {
     this.saveUndoState( range );
 
     try {
+        var root = this._root;
         var node = frag;
         var event = {
             fragment: frag,
@@ -3738,14 +3743,14 @@ proto.insertHTML = function ( html, isPaste ) {
             defaultPrevented: false
         };
 
-        addLinks( frag );
+        addLinks( frag, root );
         cleanTree( frag );
-        cleanupBRs( frag );
+        cleanupBRs( frag, root );
         removeEmptyInlines( frag );
         frag.normalize();
 
-        while ( node = getNextBlock( node ) ) {
-            fixCursor( node );
+        while ( node = getNextBlock( node, root ) ) {
+            fixCursor( node, root );
         }
 
         if ( isPaste ) {
@@ -3753,7 +3758,7 @@ proto.insertHTML = function ( html, isPaste ) {
         }
 
         if ( !event.defaultPrevented ) {
-            insertTreeFragmentIntoRange( range, event.fragment );
+            insertTreeFragmentIntoRange( range, event.fragment, root );
             if ( !canObserveMutations ) {
                 this._docWasChanged();
             }
@@ -3958,13 +3963,14 @@ proto.removeAllFormatting = function ( range ) {
         return this;
     }
 
+    var root = this._root;
     var stopNode = range.commonAncestorContainer;
     while ( stopNode && !isBlock( stopNode ) ) {
         stopNode = stopNode.parentNode;
     }
     if ( !stopNode ) {
-        expandRangeToBlockBoundaries( range );
-        stopNode = this._body;
+        expandRangeToBlockBoundaries( range, root );
+        stopNode = root;
     }
     if ( stopNode.nodeType === TEXT_NODE ) {
         return this;
@@ -3977,7 +3983,7 @@ proto.removeAllFormatting = function ( range ) {
     moveRangeBoundariesUpTree( range, stopNode );
 
     // Split the selection up to the block, or if whole selection in same
-    // block, expand range boundaries to ends of block and split up to body.
+    // block, expand range boundaries to ends of block and split up to root.
     var doc = stopNode.ownerDocument;
     var startContainer = range.startContainer;
     var startOffset = range.startOffset;
@@ -3988,8 +3994,8 @@ proto.removeAllFormatting = function ( range ) {
     // in same container.
     var formattedNodes = doc.createDocumentFragment();
     var cleanNodes = doc.createDocumentFragment();
-    var nodeAfterSplit = split( endContainer, endOffset, stopNode );
-    var nodeInSplit = split( startContainer, startOffset, stopNode );
+    var nodeAfterSplit = split( endContainer, endOffset, stopNode, root );
+    var nodeInSplit = split( startContainer, startOffset, stopNode, root );
     var nextNode, _range, childNodes;
 
     // Then replace contents in split with a cleaned version of the same:
diff --git a/build/squire.js b/build/squire.js
index 72a839a..b93cd4d 100644
--- a/build/squire.js
+++ b/build/squire.js
@@ -1,2 +1,2 @@
-!function(e,t){"use strict";function n(e,t,n){this.root=this.currentNode=e,this.nodeType=t,this.filter=n}function r(e,t){for(var n=e.length;n--;)if(!t(e[n]))return!1;return!0}function i(e,t,n){if(e.nodeName!==t)return!1;for(var r in n)if(e.getAttribute(r)!==n[r])return!1;return!0}function o(e,t){return!a(e)&&e.nodeType===t.nodeType&&e.nodeName===t.nodeName&&e.className===t.className&&(!e.style&&!t.style||e.style.cssText===t.style.cssText)}function a(e){return e.nodeType===A&&!!ot[e.nodeName]}function s(e){return it.test(e.nodeName)}function d(e){var t=e.nodeType;return(t===A||t===R)&&!s(e)&&r(e.childNodes,s)}function l(e){var t=e.nodeType;return!(t!==A&&t!==R||s(e)||d(e))}function c(e){var t=e.ownerDocument,r=new n(t.body,I,d,!1);return r.currentNode=e,r}function f(e){return c(e).previousNode()}function h(e){return c(e).nextNode()}function u(e,t,n){do if(i(e,t,n))return e;while(e=e.parentNode);return null}function p(e){var t,n,r,i,o,a=e.parentNode;return a&&e.nodeType===A?(t=p(a),t+=(t?">":"")+e.nodeName,(n=e.id)&&(t+="#"+n),(r=e.className.trim())&&(i=r.split(/\s\s*/),i.sort(),t+=".",t+=i.join(".")),(o=e.dir)&&(t+="[dir="+o+"]")):t=a?p(a):"",t}function g(e){var t=e.nodeType;return t===A?e.childNodes.length:e.length||0}function m(e){var t=e.parentNode;return t&&t.removeChild(e),e}function v(e,t){var n=e.parentNode;n&&n.replaceChild(t,e)}function C(e){for(var t=e.ownerDocument.createDocumentFragment(),n=e.childNodes,r=n?n.length:0;r--;)t.appendChild(e.firstChild);return t}function N(e,n,r,i){var o,a,s,d,l=e.createElement(n);if(r instanceof Array&&(i=r,r=null),r)for(o in r)a=r[o],a!==t&&l.setAttribute(o,r[o]);if(i)for(s=0,d=i.length;d>s;s+=1)l.appendChild(i[s]);return l}function S(e){var 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pt(n,r,!0)&&h(r,e,t)});r||g.forEach(function(e){p(e,e)}),u.forEach(function(e){var t=e[0].cloneNode(!1),n=e[1];C(n,t),t.appendChild(n)}),g.forEach(function(e){C(e,N(e))}),this._getRangeAndRemoveBookmark(n),o&&n.collapse(!1);var m={startContainer:n.startContainer,startOffset:n.startOffset,endContainer:n.endContainer,endOffset:n.endOffset};return b(s,m),n.setStart(m.startContainer,m.startOffset),n.setEnd(m.endContainer,m.endOffset),n},Vt.changeFormat=function(e,t,n,r){return n||(n=this.getSelection())?(this.saveUndoState(n),t&&(n=this._removeFormat(t.tag.toUpperCase(),t.attributes||{},n,r)),e&&(n=this._addFormat(e.tag.toUpperCase(),e.attributes||{},n)),this.setSelection(n),this._updatePath(n,!0),nt||this._docWasChanged(),this):void 0};var Yt={DT:"DD",DD:"DT",LI:"LI"},Xt=function(e,t,n,r){var o=Yt[t.nodeName],i=null,a=T(n,r,t.parentNode,e._root),s=e._config;
+return o||(o=s.blockTag,i=s.blockAttributes),h(a,o,i)||(t=S(a.ownerDocument,o,i),a.dir&&(t.dir=a.dir),C(a,t),t.appendChild(N(a)),a=t),a};Vt.forEachBlock=function(e,t,n){if(!n&&!(n=this.getSelection()))return this;t&&this.saveUndoState(n);var r=this._root,o=vt(n,r),i=Ct(n,r);if(o&&i)do if(e(o)||o===i)break;while(o=c(o,r));return t&&(this.setSelection(n),this._updatePath(n,!0),nt||this._docWasChanged()),this},Vt.modifyBlocks=function(e,t){if(!t&&!(t=this.getSelection()))return this;this._isInUndoState?this._saveRangeToBookmark(t):this._recordUndoState(t);var n,r=this._root;return yt(t,r),mt(t,r),n=ft(t,r,r),ct(t,e.call(this,n)),t.endOffset<t.endContainer.childNodes.length&&x(t.endContainer.childNodes[t.endOffset],r),x(t.startContainer.childNodes[t.startOffset],r),this._getRangeAndRemoveBookmark(t),this.setSelection(t),this._updatePath(t,!0),nt||this._docWasChanged(),this};var Jt=function(e){return this.createElement("BLOCKQUOTE",this._config.tagAttributes.blockquote,[e])},en=function(e){var t=this._root,n=e.querySelectorAll("blockquote");return Array.prototype.filter.call(n,function(e){return!u(e.parentNode,t,"BLOCKQUOTE")}).forEach(function(e){C(e,N(e))}),e},tn=function(){return this.createDefaultBlock([this.createElement("INPUT",{id:Qt,type:"hidden"}),this.createElement("INPUT",{id:$t,type:"hidden"})])},nn=function(e,t,n){for(var r,o,i,a,s=d(t,e._root),l=e._config.tagAttributes,c=l[n.toLowerCase()],f=l.li;r=s.nextNode();)o=r.parentNode.nodeName,"LI"!==o?(a=e.createElement("LI",f),r.dir&&(a.dir=r.dir),(i=r.previousSibling)&&i.nodeName===n?i.appendChild(a):C(r,e.createElement(n,c,[a])),a.appendChild(r)):(r=r.parentNode.parentNode,o=r.nodeName,o!==n&&/^[OU]L$/.test(o)&&C(r,e.createElement(n,c,[N(r)])))},rn=function(e){return nn(this,e,"UL"),e},on=function(e){return nn(this,e,"OL"),e},an=function(e){var t,n,r,o,i,a,s,d=e.querySelectorAll("UL, OL");for(t=0,n=d.length;n>t;t+=1){for(o=d[t],i=N(o),a=i.childNodes,r=a.length;r--;)s=a[r],C(s,N(s));y(i,this._root),C(o,i)}return e},sn=function(e){var t,n,r,o,i,a,d=e.querySelectorAll("LI"),l=this._config.tagAttributes,c=l.li;for(t=0,n=d.length;n>t;t+=1)r=d[t],s(r.firstChild)||(o=r.parentNode.nodeName,i=r.previousSibling,i&&(i=i.lastChild)&&i.nodeName===o||(a=l[o.toLowerCase()],C(r,this.createElement("LI",c,[i=this.createElement(o,a)]))),i.appendChild(r));return e},dn=function(e){var t=this._root,n=e.querySelectorAll("LI");return Array.prototype.filter.call(n,function(e){return!s(e.firstChild)}).forEach(function(n){var r,o=n.parentNode,i=o.parentNode,a=n.firstChild,d=a;for(n.previousSibling&&(o=T(o,n,i,t));d&&(r=d.nextSibling,!s(d));)i.insertBefore(d,o),d=r;for("LI"===i.nodeName&&a.previousSibling&&T(i,a,i.parentNode,t);n!==e&&!n.childNodes.length;)o=n.parentNode,o.removeChild(n),n=o},this),y(e,t),e};Vt._ensureBottomLine=function(){var e=this._root,t=e.lastElementChild;t&&t.nodeName===this._config.blockTag&&a(t)||e.appendChild(this.createDefaultBlock())},Vt.setKeyHandler=function(e,t){return this._keyHandlers[e]=t,this},Vt._getHTML=function(){return this._root.innerHTML},Vt._setHTML=function(e){var t=this._root,n=t;n.innerHTML=e;do _(n,t);while(n=c(n,t));this._ignoreChange=!0},Vt.getHTML=function(e){var t,n,r,o,i,a,s=[];if(e&&(a=this.getSelection())&&this._saveRangeToBookmark(a),J)for(t=this._root,n=t;n=c(n,t);)n.textContent||n.querySelector("BR")||(r=this.createElement("BR"),n.appendChild(r),s.push(r));if(o=this._getHTML().replace(/\u200B/g,""),J)for(i=s.length;i--;)v(s[i]);return a&&this._getRangeAndRemoveBookmark(a),o},Vt.setHTML=function(e){var t,n=this._doc.createDocumentFragment(),r=this.createElement("DIV"),o=this._root;r.innerHTML=e,n.appendChild(N(r)),Pt(n),Ht(n,o),y(n,o);for(var i=n;i=c(i,o);)_(i,o);for(this._ignoreChange=!0;t=o.lastChild;)o.removeChild(t);o.appendChild(n),_(o,o),this._undoIndex=-1,this._undoStack.length=0,this._undoStackLength=0,this._isInUndoState=!1;var a=this._getRangeAndRemoveBookmark()||this._createRange(o.firstChild,0);return this.saveUndoState(a),this._lastSelection=a,this._updatePath(a,!0),this},Vt.insertElement=function(e,t){if(t||(t=this.getSelection()),t.collapse(!0),i(e))ct(t,e),t.setStartAfter(e);else{for(var n,r,o=this._root,a=vt(t,o)||o;a!==o&&!a.nextSibling;)a=a.parentNode;a!==o&&(n=a.parentNode,r=T(n,a.nextSibling,o,o)),r?o.insertBefore(e,r):(o.appendChild(e),r=this.createDefaultBlock(),o.appendChild(r)),t.setStart(r,0),t.setEnd(r,0),gt(t)}return this.focus(),this.setSelection(t),this._updatePath(t),this},Vt.insertImage=function(e,t){var n=this.createElement("IMG",B({src:e},t));return this.insertElement(n),n};var ln=/\b((?:(?:ht|f)tps?:\/\/|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,}\/)(?:[^\s()<>]+|\([^\s()<>]+\))+(?:\((?:[^\s()<>]+|(?:\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))|([\w\-.%+]+@(?:[\w\-]+\.)+[A-Z]{2,}\b)/i,cn=function(e,t){for(var r,o,i,a,s,d,l,c=e.ownerDocument,f=new n(e,w,function(e){return!u(e,t,"A")},!1);r=f.nextNode();)for(o=r.data,i=r.parentNode;a=ln.exec(o);)s=a.index,d=s+a[0].length,s&&(l=c.createTextNode(o.slice(0,s)),i.insertBefore(l,r)),l=c.createElement("A"),l.textContent=o.slice(s,d),l.href=a[1]?/^(?:ht|f)tps?:/.test(a[1])?a[1]:"http://"+a[1]:"mailto:"+a[2],i.insertBefore(l,r),r.data=o=o.slice(d)};Vt.insertHTML=function(e,t){var n=this.getSelection(),r=this._doc.createDocumentFragment(),o=this.createElement("DIV");o.innerHTML=e,r.appendChild(N(o)),this.saveUndoState(n);try{var i=this._root,a=r,s={fragment:r,preventDefault:function(){this.defaultPrevented=!0},defaultPrevented:!1};for(cn(r,i),Pt(r),Ht(r,i),wt(r),r.normalize();a=c(a,i);)_(a,i);t&&this.fireEvent("willPaste",s),s.defaultPrevented||(ut(n,s.fragment,i),nt||this._docWasChanged(),n.collapse(!1),this._ensureBottomLine()),this.setSelection(n),this._updatePath(n,!0)}catch(d){this.didError(d)}return this},Vt.insertPlainText=function(e,t){var n,r,o,i=e.split("\n");for(n=0,r=i.length;r>n;n+=1)o=i[n],o=o.split("&").join("&amp;").split("<").join("&lt;").split(">").join("&gt;").replace(/ (?= )/g,"&nbsp;"),n&&r>n+1&&(o="<DIV>"+(o||"<BR>")+"</DIV>"),i[n]=o;return this.insertHTML(i.join(""),t)};var fn=function(e,t,n){return function(){return this[e](t,n),this.focus()}};Vt.addStyles=function(e){if(e){var t=this._doc.documentElement.firstChild,n=this.createElement("STYLE",{type:"text/css"});n.appendChild(this._doc.createTextNode(e)),t.appendChild(n)}return this},Vt.bold=fn("changeFormat",{tag:"B"}),Vt.italic=fn("changeFormat",{tag:"I"}),Vt.underline=fn("changeFormat",{tag:"U"}),Vt.strikethrough=fn("changeFormat",{tag:"S"}),Vt.subscript=fn("changeFormat",{tag:"SUB"},{tag:"SUP"}),Vt.superscript=fn("changeFormat",{tag:"SUP"},{tag:"SUB"}),Vt.removeBold=fn("changeFormat",null,{tag:"B"}),Vt.removeItalic=fn("changeFormat",null,{tag:"I"}),Vt.removeUnderline=fn("changeFormat",null,{tag:"U"}),Vt.removeStrikethrough=fn("changeFormat",null,{tag:"S"}),Vt.removeSubscript=fn("changeFormat",null,{tag:"SUB"}),Vt.removeSuperscript=fn("changeFormat",null,{tag:"SUP"}),Vt.makeLink=function(e,t){var n=this.getSelection();if(n.collapsed){var r=e.indexOf(":")+1;if(r)for(;"/"===e[r];)r+=1;ct(n,this._doc.createTextNode(e.slice(r)))}return t||(t={}),t.href=e,this.changeFormat({tag:"A",attributes:t},{tag:"A"},n),this.focus()},Vt.removeLink=function(){return this.changeFormat(null,{tag:"A"},this.getSelection(),!0),this.focus()},Vt.setFontFace=function(e){return this.changeFormat({tag:"SPAN",attributes:{"class":"font",style:"font-family: "+e+", sans-serif;"}},{tag:"SPAN",attributes:{"class":"font"}}),this.focus()},Vt.setFontSize=function(e){return this.changeFormat({tag:"SPAN",attributes:{"class":"size",style:"font-size: "+("number"==typeof e?e+"px":e)}},{tag:"SPAN",attributes:{"class":"size"}}),this.focus()},Vt.setTextColour=function(e){return this.changeFormat({tag:"SPAN",attributes:{"class":"colour",style:"color:"+e}},{tag:"SPAN",attributes:{"class":"colour"}}),this.focus()},Vt.setHighlightColour=function(e){return this.changeFormat({tag:"SPAN",attributes:{"class":"highlight",style:"background-color:"+e}},{tag:"SPAN",attributes:{"class":"highlight"}}),this.focus()},Vt.setTextAlignment=function(e){return this.forEachBlock(function(t){t.className=(t.className.split(/\s+/).filter(function(e){return!/align/.test(e)}).join(" ")+" align-"+e).trim(),t.style.textAlign=e},!0),this.focus()},Vt.setTextDirection=function(e){return this.forEachBlock(function(t){t.dir=e},!0),this.focus()},Vt.removeAllFormatting=function(e){if(!e&&!(e=this.getSelection())||e.collapsed)return this;for(var t=this._root,n=e.commonAncestorContainer;n&&!a(n);)n=n.parentNode;if(n||(yt(e,t),n=t),n.nodeType===R)return this;this.saveUndoState(e),mt(e,n);for(var r,o,i,s=n.ownerDocument,d=e.startContainer,l=e.startOffset,c=e.endContainer,f=e.endOffset,h=s.createDocumentFragment(),u=s.createDocumentFragment(),p=T(c,f,n,t),g=T(d,l,n,t);g!==p;)r=g.nextSibling,h.appendChild(g),g=r;return L(this,h,u),u.normalize(),g=u.firstChild,r=u.lastChild,i=n.childNodes,g?(n.insertBefore(u,p),l=ot.call(i,g),f=ot.call(i,r)+1):(l=ot.call(i,p),f=l),o={startContainer:n,startOffset:l,endContainer:n,endOffset:f},b(n,o),e.setStart(o.startContainer,o.startOffset),e.setEnd(o.endContainer,o.endOffset),gt(e),this.setSelection(e),this._updatePath(e,!0),this.focus()},Vt.increaseQuoteLevel=fn("modifyBlocks",Jt),Vt.decreaseQuoteLevel=fn("modifyBlocks",en),Vt.makeUnorderedList=fn("modifyBlocks",rn),Vt.makeOrderedList=fn("modifyBlocks",on),Vt.removeList=fn("modifyBlocks",an),Vt.increaseListLevel=fn("modifyBlocks",sn),Vt.decreaseListLevel=fn("modifyBlocks",dn),"object"==typeof exports?module.exports=O:"function"==typeof define&&define.amd?define(function(){return O}):(K.Squire=O,top!==K&&"true"===e.documentElement.getAttribute("data-squireinit")&&(K.editor=new O(e),K.onEditorLoad&&(K.onEditorLoad(K.editor),K.onEditorLoad=null)))}(document);
\ No newline at end of file
diff --git a/source/Clean.js b/source/Clean.js
index 2e35d1f..068cd0a 100644
--- a/source/Clean.js
+++ b/source/Clean.js
@@ -272,8 +272,8 @@ var cleanTree = function cleanTree ( node ) {
 
 // ---
 
-var removeEmptyInlines = function removeEmptyInlines ( root ) {
-    var children = root.childNodes,
+var removeEmptyInlines = function removeEmptyInlines ( node ) {
+    var children = node.childNodes,
         l = children.length,
         child;
     while ( l-- ) {
@@ -281,10 +281,10 @@ var removeEmptyInlines = function removeEmptyInlines ( root ) {
         if ( child.nodeType === ELEMENT_NODE && !isLeaf( child ) ) {
             removeEmptyInlines( child );
             if ( isInline( child ) && !child.firstChild ) {
-                root.removeChild( child );
+                node.removeChild( child );
             }
         } else if ( child.nodeType === TEXT_NODE && !child.data ) {
-            root.removeChild( child );
+            node.removeChild( child );
         }
     }
 };
@@ -314,8 +314,8 @@ var isLineBreak = function ( br ) {
 // line breaks by wrapping the inline text in a <div>. Browsers that want <br>
 // elements at the end of each block will then have them added back in a later
 // fixCursor method call.
-var cleanupBRs = function ( root ) {
-    var brs = root.querySelectorAll( 'BR' ),
+var cleanupBRs = function ( node, root ) {
+    var brs = node.querySelectorAll( 'BR' ),
         brBreaksLine = [],
         l = brs.length,
         i, br, parent;
@@ -340,7 +340,7 @@ var cleanupBRs = function ( root ) {
         if ( !brBreaksLine[l] ) {
             detach( br );
         } else if ( !isInline( parent ) ) {
-            fixContainer( parent );
+            fixContainer( parent, root );
         }
     }
 };
diff --git a/source/Clipboard.js b/source/Clipboard.js
index 2b29208..5a1eea5 100644
--- a/source/Clipboard.js
+++ b/source/Clipboard.js
@@ -4,7 +4,7 @@ var onCut = function ( event ) {
     var clipboardData = event.clipboardData;
     var range = this.getSelection();
     var node = this.createElement( 'div' );
-    var body = this._body;
+    var root = this._root;
     var self = this;
 
     // Save undo checkpoint
@@ -12,8 +12,8 @@ var onCut = function ( event ) {
 
     // Edge only seems to support setting plain text as of 2016-03-11.
     if ( !isEdge && clipboardData ) {
-        moveRangeBoundariesUpTree( range, body );
-        node.appendChild( deleteContentsOfRange( range, body ) );
+        moveRangeBoundariesUpTree( range, root );
+        node.appendChild( deleteContentsOfRange( range, root ) );
         clipboardData.setData( 'text/html', node.innerHTML );
         clipboardData.setData( 'text/plain',
             node.innerText || node.textContent );
@@ -21,7 +21,7 @@ var onCut = function ( event ) {
     } else {
         setTimeout( function () {
             try {
-                // If all content removed, ensure div at start of body.
+                // If all content removed, ensure div at start of root.
                 self._ensureBottomLine();
             } catch ( error ) {
                 self.didError( error );
@@ -141,21 +141,18 @@ var onPaste = function ( event ) {
 
     this._awaitingPaste = true;
 
-    var body = this._body,
+    var body = this._doc.body,
         range = this.getSelection(),
         startContainer = range.startContainer,
         startOffset = range.startOffset,
         endContainer = range.endContainer,
-        endOffset = range.endOffset,
-        startBlock = getStartBlockOfRange( range );
+        endOffset = range.endOffset;
 
     // We need to position the pasteArea in the visible portion of the screen
     // to stop the browser auto-scrolling.
     var pasteArea = this.createElement( 'DIV', {
-        style: 'position: absolute; overflow: hidden; top:' +
-            ( body.scrollTop +
-                ( startBlock ? startBlock.getBoundingClientRect().top : 0 ) ) +
-            'px; right: 150%; width: 1px; height: 1px;'
+        contenteditable: 'true',
+        style: 'position:fixed; overflow:hidden; top:0; right:100%; width:1px; height:1px;'
     });
     body.appendChild( pasteArea );
     range.selectNodeContents( pasteArea );
diff --git a/source/Constants.js b/source/Constants.js
index 31b9a9f..a2f30d0 100644
--- a/source/Constants.js
+++ b/source/Constants.js
@@ -3,6 +3,7 @@
 var DOCUMENT_POSITION_PRECEDING = 2; // Node.DOCUMENT_POSITION_PRECEDING
 var ELEMENT_NODE = 1;                // Node.ELEMENT_NODE;
 var TEXT_NODE = 3;                   // Node.TEXT_NODE;
+var DOCUMENT_NODE = 9;               // Node.DOCUMENT_NODE;
 var DOCUMENT_FRAGMENT_NODE = 11;     // Node.DOCUMENT_FRAGMENT_NODE;
 var SHOW_ELEMENT = 1;                // NodeFilter.SHOW_ELEMENT;
 var SHOW_TEXT = 4;                   // NodeFilter.SHOW_TEXT;
diff --git a/source/Editor.js b/source/Editor.js
index 4501075..6ad4083 100644
--- a/source/Editor.js
+++ b/source/Editor.js
@@ -28,14 +28,17 @@ function mergeObjects ( base, extras ) {
     return base;
 }
 
-function Squire ( doc, config ) {
+function Squire ( root, config ) {
+    if ( root.nodeType === DOCUMENT_NODE ) {
+        root = root.body;
+    }
+    var doc = root.ownerDocument;
     var win = doc.defaultView;
-    var body = doc.body;
     var mutation;
 
     this._win = win;
     this._doc = doc;
-    this._body = body;
+    this._root = root;
 
     this._events = {};
 
@@ -56,9 +59,6 @@ function Squire ( doc, config ) {
     this.addEventListener( 'keyup', this._updatePathOnEvent );
     this.addEventListener( 'mouseup', this._updatePathOnEvent );
 
-    win.addEventListener( 'focus', this, false );
-    win.addEventListener( 'blur', this, false );
-
     this._undoIndex = -1;
     this._undoStack = [];
     this._undoStackLength = 0;
@@ -67,7 +67,7 @@ function Squire ( doc, config ) {
 
     if ( canObserveMutations ) {
         mutation = new MutationObserver( this._docWasChanged.bind( this ) );
-        mutation.observe( body, {
+        mutation.observe( root, {
             childList: true,
             attributes: true,
             characterData: true,
@@ -123,7 +123,7 @@ function Squire ( doc, config ) {
         };
     }
 
-    body.setAttribute( 'contenteditable', 'true' );
+    root.setAttribute( 'contenteditable', 'true' );
 
     // Remove Firefox's built-in controls
     try {
@@ -167,7 +167,8 @@ proto.createElement = function ( tag, props, children ) {
 proto.createDefaultBlock = function ( children ) {
     var config = this._config;
     return fixCursor(
-        this.createElement( config.blockTag, config.blockAttributes, children )
+        this.createElement( config.blockTag, config.blockAttributes, children ),
+        this._root
     );
 };
 
@@ -185,8 +186,8 @@ proto.getDocument = function () {
 // document node, since these events are fired in a custom manner by the
 // editor code.
 var customEvents = {
-    focus: 1, blur: 1,
-    pathChange: 1, select: 1, input: 1, undoStateChange: 1
+    pathChange: 1, select: 1, input: 1,
+    undoStateChange: 1, scrollPointIntoView: 1
 };
 
 proto.fireEvent = function ( type, event ) {
@@ -220,15 +221,12 @@ proto.fireEvent = function ( type, event ) {
 };
 
 proto.destroy = function () {
-    var win = this._win,
-        doc = this._doc,
+    var root = this._root,
         events = this._events,
         type;
-    win.removeEventListener( 'focus', this, false );
-    win.removeEventListener( 'blur', this, false );
     for ( type in events ) {
         if ( !customEvents[ type ] ) {
-            doc.removeEventListener( type, this, true );
+            root.removeEventListener( type, this, true );
         }
     }
     if ( this._mutation ) {
@@ -258,7 +256,7 @@ proto.addEventListener = function ( type, fn ) {
     if ( !handlers ) {
         handlers = this._events[ type ] = [];
         if ( !customEvents[ type ] ) {
-            this._doc.addEventListener( type, this, true );
+            this._root.addEventListener( type, this, true );
         }
     }
     handlers.push( fn );
@@ -278,7 +276,7 @@ proto.removeEventListener = function ( type, fn ) {
         if ( !handlers.length ) {
             delete this._events[ type ];
             if ( !customEvents[ type ] ) {
-                this._doc.removeEventListener( type, this, false );
+                this._root.removeEventListener( type, this, true );
             }
         }
     }
@@ -315,26 +313,18 @@ proto.scrollRangeIntoView = function ( range ) {
         parent.removeChild( node );
         parent.normalize();
     }
-    if ( !rect ) {
-        return;
-    }
-    // Then check and scroll
-    var win = this._win;
-    var height = win.innerHeight;
-    var top = rect.top;
-    if ( top > height ) {
-        win.scrollBy( 0, top - height + 20 );
-    }
     // And fire event for integrations to use
-    this.fireEvent( 'scrollPointIntoView', {
-        x: rect.left,
-        y: top
-    });
+    if ( rect ) {
+        this.fireEvent( 'scrollPointIntoView', {
+            x: rect.left,
+            y: rect.top
+        });
+    }
 };
 
 proto._moveCursorTo = function ( toStart ) {
-    var body = this._body,
-        range = this._createRange( body, toStart ? 0 : body.childNodes.length );
+    var root = this._root,
+        range = this._createRange( root, toStart ? 0 : root.childNodes.length );
     moveRangeBoundariesDownTree( range );
     this.setSelection( range );
     return this;
@@ -370,8 +360,9 @@ proto.setSelection = function ( range ) {
 };
 
 proto.getSelection = function () {
-    var sel = getWindowSelection( this ),
-        selection, startContainer, endContainer;
+    var sel = getWindowSelection( this );
+    var root = this._root;
+    var selection, startContainer, endContainer;
     if ( sel && sel.rangeCount ) {
         selection  = sel.getRangeAt( 0 ).cloneRange();
         startContainer = selection.startContainer;
@@ -383,12 +374,15 @@ proto.getSelection = function () {
         if ( endContainer && isLeaf( endContainer ) ) {
             selection.setEndBefore( endContainer );
         }
+    }
+    if ( selection &&
+            isOrContains( root, selection.commonAncestorContainer ) ) {
         this._lastSelection = selection;
     } else {
         selection = this._lastSelection;
     }
     if ( !selection ) {
-        selection = this._createRange( this._body.firstChild, 0 );
+        selection = this._createRange( root.firstChild, 0 );
     }
     return selection;
 };
@@ -474,7 +468,7 @@ proto._removeZWS = function () {
     if ( !this._hasZWS ) {
         return;
     }
-    removeZWS( this._body );
+    removeZWS( this._root );
     this._hasZWS = false;
 };
 
@@ -489,7 +483,7 @@ proto._updatePath = function ( range, force ) {
         this._lastAnchorNode = anchor;
         this._lastFocusNode = focus;
         newPath = ( anchor && focus ) ? ( anchor === focus ) ?
-            getPath( focus ) : '(selection)' : '';
+            getPath( focus, this._root ) : '(selection)' : '';
         if ( this._path !== newPath ) {
             this._path = newPath;
             this.fireEvent( 'pathChange', { path: newPath } );
@@ -507,26 +501,12 @@ proto._updatePathOnEvent = function () {
 // --- Focus ---
 
 proto.focus = function () {
-    // FF seems to need the body to be focussed (at least on first load).
-    // Chrome also now needs body to be focussed in order to show the cursor
-    // (otherwise it is focussed, but the cursor doesn't appear).
-    // Opera (Presto-variant) however will lose the selection if you call this!
-    if ( !isPresto ) {
-        this._body.focus();
-    }
-    this._win.focus();
+    this._root.focus();
     return this;
 };
 
 proto.blur = function () {
-    // IE will remove the whole browser window from focus if you call
-    // win.blur() or body.blur(), so instead we call top.focus() to focus
-    // the top frame, thus blurring this frame. This works in everything
-    // except FF, so we need to call body.blur() in that as well.
-    if ( isGecko ) {
-        this._body.blur();
-    }
-    top.focus();
+    this._root.blur();
     return this;
 };
 
@@ -565,9 +545,9 @@ proto._saveRangeToBookmark = function ( range ) {
 };
 
 proto._getRangeAndRemoveBookmark = function ( range ) {
-    var doc = this._doc,
-        start = doc.getElementById( startSelectionId ),
-        end = doc.getElementById( endSelectionId );
+    var root = this._root,
+        start = root.querySelector( '#' + startSelectionId ),
+        end = root.querySelector( '#' + endSelectionId );
 
     if ( start && end ) {
         var startContainer = start.parentNode,
@@ -595,7 +575,7 @@ proto._getRangeAndRemoveBookmark = function ( range ) {
         }
 
         if ( !range ) {
-            range = doc.createRange();
+            range = this._doc.createRange();
         }
         range.setStart( _range.startContainer, _range.startOffset );
         range.setEnd( _range.endContainer, _range.endOffset );
@@ -744,27 +724,28 @@ proto.hasFormat = function ( tag, attributes, range ) {
 
     // If the common ancestor is inside the tag we require, we definitely
     // have the format.
-    var root = range.commonAncestorContainer,
-        walker, node;
-    if ( getNearest( root, tag, attributes ) ) {
+    var root = this._root;
+    var common = range.commonAncestorContainer;
+    var walker, node;
+    if ( getNearest( common, root, tag, attributes ) ) {
         return true;
     }
 
     // If common ancestor is a text node and doesn't have the format, we
     // definitely don't have it.
-    if ( root.nodeType === TEXT_NODE ) {
+    if ( common.nodeType === TEXT_NODE ) {
         return false;
     }
 
     // Otherwise, check each text node at least partially contained within
     // the selection and make sure all of them have the format we want.
-    walker = new TreeWalker( root, SHOW_TEXT, function ( node ) {
+    walker = new TreeWalker( common, SHOW_TEXT, function ( node ) {
         return isNodeContainedInRange( range, node, true );
     }, false );
 
     var seenNode = false;
     while ( node = walker.nextNode() ) {
-        if ( !getNearest( node, tag, attributes ) ) {
+        if ( !getNearest( node, root, tag, attributes ) ) {
             return false;
         }
         seenNode = true;
@@ -823,11 +804,12 @@ proto.getFontInfo = function ( range ) {
 proto._addFormat = function ( tag, attributes, range ) {
     // If the range is collapsed we simply insert the node by wrapping
     // it round the range and focus it.
+    var root = this._root;
     var el, walker, startContainer, endContainer, startOffset, endOffset,
         node, needsFormat;
 
     if ( range.collapsed ) {
-        el = fixCursor( this.createElement( tag, attributes ) );
+        el = fixCursor( this.createElement( tag, attributes ), root );
         insertNodeInRange( range, el );
         range.setStart( el.firstChild, el.firstChild.length );
         range.collapse( true );
@@ -880,7 +862,7 @@ proto._addFormat = function ( tag, attributes, range ) {
 
         do {
             node = walker.currentNode;
-            needsFormat = !getNearest( node, tag, attributes );
+            needsFormat = !getNearest( node, root, tag, attributes );
             if ( needsFormat ) {
                 // <br> can never be a container node, so must have a text node
                 // if node == (end|start)Container
@@ -1078,7 +1060,7 @@ var tagAfterSplit = {
 var splitBlock = function ( self, block, node, offset ) {
     var splitTag = tagAfterSplit[ block.nodeName ],
         splitProperties = null,
-        nodeAfterSplit = split( node, offset, block.parentNode ),
+        nodeAfterSplit = split( node, offset, block.parentNode, self._root ),
         config = self._config;
 
     if ( !splitTag ) {
@@ -1110,12 +1092,13 @@ proto.forEachBlock = function ( fn, mutates, range ) {
         this.saveUndoState( range );
     }
 
-    var start = getStartBlockOfRange( range ),
-        end = getEndBlockOfRange( range );
+    var root = this._root;
+    var start = getStartBlockOfRange( range, root );
+    var end = getEndBlockOfRange( range, root );
     if ( start && end ) {
         do {
             if ( fn( start ) || start === end ) { break; }
-        } while ( start = getNextBlock( start ) );
+        } while ( start = getNextBlock( start, root ) );
     }
 
     if ( mutates ) {
@@ -1144,23 +1127,24 @@ proto.modifyBlocks = function ( modify, range ) {
         this._recordUndoState( range );
     }
 
+    var root = this._root;
+    var frag;
+
     // 2. Expand range to block boundaries
-    expandRangeToBlockBoundaries( range );
+    expandRangeToBlockBoundaries( range, root );
 
     // 3. Remove range.
-    var body = this._body,
-        frag;
-    moveRangeBoundariesUpTree( range, body );
-    frag = extractContentsOfRange( range, body );
+    moveRangeBoundariesUpTree( range, root );
+    frag = extractContentsOfRange( range, root, root );
 
     // 4. Modify tree of fragment and reinsert.
     insertNodeInRange( range, modify.call( this, frag ) );
 
     // 5. Merge containers at edges
     if ( range.endOffset < range.endContainer.childNodes.length ) {
-        mergeContainers( range.endContainer.childNodes[ range.endOffset ] );
+        mergeContainers( range.endContainer.childNodes[ range.endOffset ], root );
     }
-    mergeContainers( range.startContainer.childNodes[ range.startOffset ] );
+    mergeContainers( range.startContainer.childNodes[ range.startOffset ], root );
 
     // 6. Restore selection
     this._getRangeAndRemoveBookmark( range );
@@ -1183,9 +1167,10 @@ var increaseBlockQuoteLevel = function ( frag ) {
 };
 
 var decreaseBlockQuoteLevel = function ( frag ) {
+    var root = this._root;
     var blockquotes = frag.querySelectorAll( 'blockquote' );
     Array.prototype.filter.call( blockquotes, function ( el ) {
-        return !getNearest( el.parentNode, 'BLOCKQUOTE' );
+        return !getNearest( el.parentNode, root, 'BLOCKQUOTE' );
     }).forEach( function ( el ) {
         replaceWith( el, empty( el ) );
     });
@@ -1206,7 +1191,7 @@ var removeBlockQuote = function (/* frag */) {
 };
 
 var makeList = function ( self, frag, type ) {
-    var walker = getBlockWalker( frag ),
+    var walker = getBlockWalker( frag, self._root ),
         node, tag, prev, newLi,
         tagAttributes = self._config.tagAttributes,
         listAttrs = tagAttributes[ type.toLowerCase() ],
@@ -1269,7 +1254,7 @@ var removeList = function ( frag ) {
             child = children[ll];
             replaceWith( child, empty( child ) );
         }
-        fixContainer( listFrag );
+        fixContainer( listFrag, this._root );
         replaceWith( list, listFrag );
     }
     return frag;
@@ -1305,6 +1290,7 @@ var increaseListLevel = function ( frag ) {
 };
 
 var decreaseListLevel = function ( frag ) {
+    var root = this._root;
     var items = frag.querySelectorAll( 'LI' );
     Array.prototype.filter.call( items, function ( el ) {
         return !isContainer( el.firstChild );
@@ -1315,7 +1301,7 @@ var decreaseListLevel = function ( frag ) {
             node = first,
             next;
         if ( item.previousSibling ) {
-            parent = split( parent, item, newParent );
+            parent = split( parent, item, newParent, root );
         }
         while ( node ) {
             next = node.nextSibling;
@@ -1326,7 +1312,7 @@ var decreaseListLevel = function ( frag ) {
             node = next;
         }
         if ( newParent.nodeName === 'LI' && first.previousSibling ) {
-            split( newParent, first, newParent.parentNode );
+            split( newParent, first, newParent.parentNode, root );
         }
         while ( item !== frag && !item.childNodes.length ) {
             parent = item.parentNode;
@@ -1334,16 +1320,16 @@ var decreaseListLevel = function ( frag ) {
             item = parent;
         }
     }, this );
-    fixContainer( frag );
+    fixContainer( frag, root );
     return frag;
 };
 
 proto._ensureBottomLine = function () {
-    var body = this._body,
-        last = body.lastElementChild;
+    var root = this._root;
+    var last = root.lastElementChild;
     if ( !last ||
             last.nodeName !== this._config.blockTag || !isBlock( last ) ) {
-        body.appendChild( this.createDefaultBlock() );
+        root.appendChild( this.createDefaultBlock() );
     }
 };
 
@@ -1357,27 +1343,29 @@ proto.setKeyHandler = function ( key, fn ) {
 // --- Get/Set data ---
 
 proto._getHTML = function () {
-    return this._body.innerHTML;
+    return this._root.innerHTML;
 };
 
 proto._setHTML = function ( html ) {
-    var node = this._body;
+    var root = this._root;
+    var node = root;
     node.innerHTML = html;
     do {
-        fixCursor( node );
-    } while ( node = getNextBlock( node ) );
+        fixCursor( node, root );
+    } while ( node = getNextBlock( node, root ) );
     this._ignoreChange = true;
 };
 
 proto.getHTML = function ( withBookMark ) {
     var brs = [],
-        node, fixer, html, l, range;
+        root, node, fixer, html, l, range;
     if ( withBookMark && ( range = this.getSelection() ) ) {
         this._saveRangeToBookmark( range );
     }
     if ( useTextFixer ) {
-        node = this._body;
-        while ( node = getNextBlock( node ) ) {
+        root = this._root;
+        node = root;
+        while ( node = getNextBlock( node, root ) ) {
             if ( !node.textContent && !node.querySelector( 'BR' ) ) {
                 fixer = this.createElement( 'BR' );
                 node.appendChild( fixer );
@@ -1399,37 +1387,37 @@ proto.getHTML = function ( withBookMark ) {
 };
 
 proto.setHTML = function ( html ) {
-    var frag = this._doc.createDocumentFragment(),
-        div = this.createElement( 'DIV' ),
-        child;
+    var frag = this._doc.createDocumentFragment();
+    var div = this.createElement( 'DIV' );
+    var root = this._root;
+    var child;
 
     // Parse HTML into DOM tree
     div.innerHTML = html;
     frag.appendChild( empty( div ) );
 
     cleanTree( frag );
-    cleanupBRs( frag );
+    cleanupBRs( frag, root );
 
-    fixContainer( frag );
+    fixContainer( frag, root );
 
     // Fix cursor
     var node = frag;
-    while ( node = getNextBlock( node ) ) {
-        fixCursor( node );
+    while ( node = getNextBlock( node, root ) ) {
+        fixCursor( node, root );
     }
 
     // Don't fire an input event
     this._ignoreChange = true;
 
-    // Remove existing body children
-    var body = this._body;
-    while ( child = body.lastChild ) {
-        body.removeChild( child );
+    // Remove existing root children
+    while ( child = root.lastChild ) {
+        root.removeChild( child );
     }
 
     // And insert new content
-    body.appendChild( frag );
-    fixCursor( body );
+    root.appendChild( frag );
+    fixCursor( root, root );
 
     // Reset the undo stack
     this._undoIndex = -1;
@@ -1439,17 +1427,13 @@ proto.setHTML = function ( html ) {
 
     // Record undo state
     var range = this._getRangeAndRemoveBookmark() ||
-        this._createRange( body.firstChild, 0 );
+        this._createRange( root.firstChild, 0 );
     this.saveUndoState( range );
     // IE will also set focus when selecting text so don't use
     // setSelection. Instead, just store it in lastSelection, so if
     // anything calls getSelection before first focus, we have a range
     // to return.
-    if ( losesSelectionOnBlur ) {
-        this._lastSelection = range;
-    } else {
-        this.setSelection( range );
-    }
+    this._lastSelection = range;
     this._updatePath( range, true );
 
     return this;
@@ -1463,25 +1447,25 @@ proto.insertElement = function ( el, range ) {
         range.setStartAfter( el );
     } else {
         // Get containing block node.
-        var body = this._body,
-            splitNode = getStartBlockOfRange( range ) || body,
-            parent, nodeAfterSplit;
+        var root = this._root;
+        var splitNode = getStartBlockOfRange( range, root ) || root;
+        var parent, nodeAfterSplit;
         // While at end of container node, move up DOM tree.
-        while ( splitNode !== body && !splitNode.nextSibling ) {
+        while ( splitNode !== root && !splitNode.nextSibling ) {
             splitNode = splitNode.parentNode;
         }
-        // If in the middle of a container node, split up to body.
-        if ( splitNode !== body ) {
+        // If in the middle of a container node, split up to root.
+        if ( splitNode !== root ) {
             parent = splitNode.parentNode;
-            nodeAfterSplit = split( parent, splitNode.nextSibling, body );
+            nodeAfterSplit = split( parent, splitNode.nextSibling, root, root );
         }
         if ( nodeAfterSplit ) {
-            body.insertBefore( el, nodeAfterSplit );
+            root.insertBefore( el, nodeAfterSplit );
         } else {
-            body.appendChild( el );
+            root.appendChild( el );
             // Insert blank line below block.
             nodeAfterSplit = this.createDefaultBlock();
-            body.appendChild( nodeAfterSplit );
+            root.appendChild( nodeAfterSplit );
         }
         range.setStart( nodeAfterSplit, 0 );
         range.setEnd( nodeAfterSplit, 0 );
@@ -1503,11 +1487,11 @@ proto.insertImage = function ( src, attributes ) {
 
 var linkRegExp = /\b((?:(?:ht|f)tps?:\/\/|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,}\/)(?:[^\s()<>]+|\([^\s()<>]+\))+(?:\((?:[^\s()<>]+|(?:\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))|([\w\-.%+]+@(?:[\w\-]+\.)+[A-Z]{2,}\b)/i;
 
-var addLinks = function ( frag ) {
+var addLinks = function ( frag, root ) {
     var doc = frag.ownerDocument,
         walker = new TreeWalker( frag, SHOW_TEXT,
                 function ( node ) {
-            return !getNearest( node, 'A' );
+            return !getNearest( node, root, 'A' );
         }, false ),
         node, data, parent, match, index, endIndex, child;
     while ( node = walker.nextNode() ) {
@@ -1549,6 +1533,7 @@ proto.insertHTML = function ( html, isPaste ) {
     this.saveUndoState( range );
 
     try {
+        var root = this._root;
         var node = frag;
         var event = {
             fragment: frag,
@@ -1558,14 +1543,14 @@ proto.insertHTML = function ( html, isPaste ) {
             defaultPrevented: false
         };
 
-        addLinks( frag );
+        addLinks( frag, root );
         cleanTree( frag );
-        cleanupBRs( frag );
+        cleanupBRs( frag, root );
         removeEmptyInlines( frag );
         frag.normalize();
 
-        while ( node = getNextBlock( node ) ) {
-            fixCursor( node );
+        while ( node = getNextBlock( node, root ) ) {
+            fixCursor( node, root );
         }
 
         if ( isPaste ) {
@@ -1573,7 +1558,7 @@ proto.insertHTML = function ( html, isPaste ) {
         }
 
         if ( !event.defaultPrevented ) {
-            insertTreeFragmentIntoRange( range, event.fragment );
+            insertTreeFragmentIntoRange( range, event.fragment, root );
             if ( !canObserveMutations ) {
                 this._docWasChanged();
             }
@@ -1778,13 +1763,14 @@ proto.removeAllFormatting = function ( range ) {
         return this;
     }
 
+    var root = this._root;
     var stopNode = range.commonAncestorContainer;
     while ( stopNode && !isBlock( stopNode ) ) {
         stopNode = stopNode.parentNode;
     }
     if ( !stopNode ) {
-        expandRangeToBlockBoundaries( range );
-        stopNode = this._body;
+        expandRangeToBlockBoundaries( range, root );
+        stopNode = root;
     }
     if ( stopNode.nodeType === TEXT_NODE ) {
         return this;
@@ -1797,7 +1783,7 @@ proto.removeAllFormatting = function ( range ) {
     moveRangeBoundariesUpTree( range, stopNode );
 
     // Split the selection up to the block, or if whole selection in same
-    // block, expand range boundaries to ends of block and split up to body.
+    // block, expand range boundaries to ends of block and split up to root.
     var doc = stopNode.ownerDocument;
     var startContainer = range.startContainer;
     var startOffset = range.startOffset;
@@ -1808,8 +1794,8 @@ proto.removeAllFormatting = function ( range ) {
     // in same container.
     var formattedNodes = doc.createDocumentFragment();
     var cleanNodes = doc.createDocumentFragment();
-    var nodeAfterSplit = split( endContainer, endOffset, stopNode );
-    var nodeInSplit = split( startContainer, startOffset, stopNode );
+    var nodeAfterSplit = split( endContainer, endOffset, stopNode, root );
+    var nodeInSplit = split( startContainer, startOffset, stopNode, root );
     var nextNode, _range, childNodes;
 
     // Then replace contents in split with a cleaned version of the same:
diff --git a/source/KeyHandlers.js b/source/KeyHandlers.js
index 3426d60..29b4e6b 100644
--- a/source/KeyHandlers.js
+++ b/source/KeyHandlers.js
@@ -63,7 +63,7 @@ var onKey = function ( event ) {
         // Record undo checkpoint.
         this.saveUndoState( range );
         // Delete the selection
-        deleteContentsOfRange( range );
+        deleteContentsOfRange( range, this._root );
         this._ensureBottomLine();
         this.setSelection( range );
         this._updatePath( range, true );
@@ -120,17 +120,17 @@ var afterDelete = function ( self, range ) {
             parent.removeChild( node );
             // Fix cursor in block
             if ( !isBlock( parent ) ) {
-                parent = getPreviousBlock( parent );
+                parent = getPreviousBlock( parent, self._root );
             }
-            fixCursor( parent );
+            fixCursor( parent, self._root );
             // Move cursor into text node
             moveRangeBoundariesDownTree( range );
         }
         // If you delete the last character in the sole <div> in Chrome,
         // it removes the div and replaces it with just a <br> inside the
-        // body. Detach the <br>; the _ensureBottomLine call will insert a new
+        // root. Detach the <br>; the _ensureBottomLine call will insert a new
         // block.
-        if ( node.nodeName === 'BODY' &&
+        if ( node === self._root &&
                 ( node = node.firstChild ) && node.nodeName === 'BR' ) {
             detach( node );
         }
@@ -144,6 +144,7 @@ var afterDelete = function ( self, range ) {
 
 var keyHandlers = {
     enter: function ( self, event, range ) {
+        var root = self._root;
         var block, parent, nodeAfterSplit;
 
         // We handle this ourselves
@@ -160,10 +161,10 @@ var keyHandlers = {
         // Selected text is overwritten, therefore delete the contents
         // to collapse selection.
         if ( !range.collapsed ) {
-            deleteContentsOfRange( range );
+            deleteContentsOfRange( range, root );
         }
 
-        block = getStartBlockOfRange( range );
+        block = getStartBlockOfRange( range, root );
 
         // If this is a malformed bit of document or in a table;
         // just play it safe and insert a <br>.
@@ -176,17 +177,18 @@ var keyHandlers = {
         }
 
         // If in a list, we'll split the LI instead.
-        if ( parent = getNearest( block, 'LI' ) ) {
+        if ( parent = getNearest( block, root, 'LI' ) ) {
             block = parent;
         }
 
         if ( !block.textContent ) {
             // Break list
-            if ( getNearest( block, 'UL' ) || getNearest( block, 'OL' ) ) {
+            if ( getNearest( block, root, 'UL' ) ||
+                    getNearest( block, root, 'OL' ) ) {
                 return self.modifyBlocks( decreaseListLevel, range );
             }
             // Break blockquote
-            else if ( getNearest( block, 'BLOCKQUOTE' ) ) {
+            else if ( getNearest( block, root, 'BLOCKQUOTE' ) ) {
                 return self.modifyBlocks( removeBlockQuote, range );
             }
         }
@@ -199,7 +201,7 @@ var keyHandlers = {
         // block
         removeZWS( block );
         removeEmptyInlines( block );
-        fixCursor( block );
+        fixCursor( block, root );
 
         // Focus cursor
         // If there's a <b>/<i> etc. at the beginning of the split
@@ -242,27 +244,28 @@ var keyHandlers = {
         self._updatePath( range, true );
     },
     backspace: function ( self, event, range ) {
+        var root = self._root;
         self._removeZWS();
         // Record undo checkpoint.
         self.saveUndoState( range );
         // If not collapsed, delete contents
         if ( !range.collapsed ) {
             event.preventDefault();
-            deleteContentsOfRange( range );
+            deleteContentsOfRange( range, root );
             afterDelete( self, range );
         }
         // If at beginning of block, merge with previous
-        else if ( rangeDoesStartAtBlockBoundary( range ) ) {
+        else if ( rangeDoesStartAtBlockBoundary( range, root ) ) {
             event.preventDefault();
-            var current = getStartBlockOfRange( range );
+            var current = getStartBlockOfRange( range, root );
             var previous;
             if ( !current ) {
                 return;
             }
             // In case inline data has somehow got between blocks.
-            fixContainer( current.parentNode );
+            fixContainer( current.parentNode, root );
             // Now get previous block
-            previous = getPreviousBlock( current );
+            previous = getPreviousBlock( current, root );
             // Must not be at the very beginning of the text area.
             if ( previous ) {
                 // If not editable, just delete whole block.
@@ -279,7 +282,7 @@ var keyHandlers = {
                     current = current.parentNode;
                 }
                 if ( current && ( current = current.nextSibling ) ) {
-                    mergeContainers( current );
+                    mergeContainers( current, root );
                 }
                 self.setSelection( range );
             }
@@ -287,12 +290,12 @@ var keyHandlers = {
             // to break lists/blockquote.
             else if ( current ) {
                 // Break list
-                if ( getNearest( current, 'UL' ) ||
-                        getNearest( current, 'OL' ) ) {
+                if ( getNearest( current, root, 'UL' ) ||
+                        getNearest( current, root, 'OL' ) ) {
                     return self.modifyBlocks( decreaseListLevel, range );
                 }
                 // Break blockquote
-                else if ( getNearest( current, 'BLOCKQUOTE' ) ) {
+                else if ( getNearest( current, root, 'BLOCKQUOTE' ) ) {
                     return self.modifyBlocks( decreaseBlockQuoteLevel, range );
                 }
                 self.setSelection( range );
@@ -307,6 +310,7 @@ var keyHandlers = {
         }
     },
     'delete': function ( self, event, range ) {
+        var root = self._root;
         var current, next, originalRange,
             cursorContainer, cursorOffset, nodeAfterCursor;
         self._removeZWS();
@@ -315,20 +319,20 @@ var keyHandlers = {
         // If not collapsed, delete contents
         if ( !range.collapsed ) {
             event.preventDefault();
-            deleteContentsOfRange( range );
+            deleteContentsOfRange( range, root );
             afterDelete( self, range );
         }
         // If at end of block, merge next into this block
-        else if ( rangeDoesEndAtBlockBoundary( range ) ) {
+        else if ( rangeDoesEndAtBlockBoundary( range, root ) ) {
             event.preventDefault();
-            current = getStartBlockOfRange( range );
+            current = getStartBlockOfRange( range, root );
             if ( !current ) {
                 return;
             }
             // In case inline data has somehow got between blocks.
-            fixContainer( current.parentNode );
+            fixContainer( current.parentNode, root );
             // Now get next block
-            next = getNextBlock( current );
+            next = getNextBlock( current, root );
             // Must not be at the very end of the text area.
             if ( next ) {
                 // If not editable, just delete whole block.
@@ -345,7 +349,7 @@ var keyHandlers = {
                     next = next.parentNode;
                 }
                 if ( next && ( next = next.nextSibling ) ) {
-                    mergeContainers( next );
+                    mergeContainers( next, root );
                 }
                 self.setSelection( range );
                 self._updatePath( range, true );
@@ -358,7 +362,7 @@ var keyHandlers = {
             // delete it ourselves, because the browser won't if it is not
             // inline.
             originalRange = range.cloneRange();
-            moveRangeBoundariesUpTree( range, self._body );
+            moveRangeBoundariesUpTree( range, self._root );
             cursorContainer = range.endContainer;
             cursorOffset = range.endOffset;
             if ( cursorContainer.nodeType === ELEMENT_NODE ) {
@@ -376,11 +380,12 @@ var keyHandlers = {
         }
     },
     tab: function ( self, event, range ) {
+        var root = self._root;
         var node, parent;
         self._removeZWS();
         // If no selection and at start of block
-        if ( range.collapsed && rangeDoesStartAtBlockBoundary( range ) ) {
-            node = getStartBlockOfRange( range );
+        if ( range.collapsed && rangeDoesStartAtBlockBoundary( range, root ) ) {
+            node = getStartBlockOfRange( range, root );
             // Iterate through the block's parents
             while ( parent = node.parentNode ) {
                 // If we find a UL or OL (so are in a list, node must be an LI)
@@ -398,12 +403,15 @@ var keyHandlers = {
         }
     },
     'shift-tab': function ( self, event, range ) {
+        var root = self._root;
+        var node;
         self._removeZWS();
         // If no selection and at start of block
-        if ( range.collapsed && rangeDoesStartAtBlockBoundary( range ) ) {
+        if ( range.collapsed && rangeDoesStartAtBlockBoundary( range, root ) ) {
             // Break list
-            var node = range.startContainer;
-            if ( getNearest( node, 'UL' ) || getNearest( node, 'OL' ) ) {
+            node = range.startContainer;
+            if ( getNearest( node, root, 'UL' ) ||
+                    getNearest( node, root, 'OL' ) ) {
                 event.preventDefault();
                 self.modifyBlocks( decreaseListLevel, range );
             }
diff --git a/source/Node.js b/source/Node.js
index dc5c3be..554a81e 100644
--- a/source/Node.js
+++ b/source/Node.js
@@ -20,27 +20,6 @@ function every ( nodeList, fn ) {
 
 // ---
 
-function hasTagAttributes ( node, tag, attributes ) {
-    if ( node.nodeName !== tag ) {
-        return false;
-    }
-    for ( var attr in attributes ) {
-        if ( node.getAttribute( attr ) !== attributes[ attr ] ) {
-            return false;
-        }
-    }
-    return true;
-}
-function areAlike ( node, node2 ) {
-    return !isLeaf( node ) && (
-        node.nodeType === node2.nodeType &&
-        node.nodeName === node2.nodeName &&
-        node.className === node2.className &&
-        ( ( !node.style && !node2.style ) ||
-          node.style.cssText === node2.style.cssText )
-    );
-}
-
 function isLeaf ( node ) {
     return node.nodeType === ELEMENT_NODE &&
         !!leafNodeNames[ node.nodeName ];
@@ -59,48 +38,80 @@ function isContainer ( node ) {
         !isInline( node ) && !isBlock( node );
 }
 
-function getBlockWalker ( node ) {
-    var doc = node.ownerDocument,
-        walker = new TreeWalker(
-            doc.body, SHOW_ELEMENT, isBlock, false );
+function getBlockWalker ( node, root ) {
+    var walker = new TreeWalker( root, SHOW_ELEMENT, isBlock, false );
     walker.currentNode = node;
     return walker;
 }
+function getPreviousBlock ( node, root ) {
+    node = getBlockWalker( node, root ).previousNode();
+    return node !== root ? node : null;
+}
+function getNextBlock ( node, root ) {
+    node = getBlockWalker( node, root ).nextNode();
+    return node !== root ? node : null;
+}
 
-function getPreviousBlock ( node ) {
-    return getBlockWalker( node ).previousNode();
+function areAlike ( node, node2 ) {
+    return !isLeaf( node ) && (
+        node.nodeType === node2.nodeType &&
+        node.nodeName === node2.nodeName &&
+        node.className === node2.className &&
+        ( ( !node.style && !node2.style ) ||
+          node.style.cssText === node2.style.cssText )
+    );
 }
-function getNextBlock ( node ) {
-    return getBlockWalker( node ).nextNode();
+function hasTagAttributes ( node, tag, attributes ) {
+    if ( node.nodeName !== tag ) {
+        return false;
+    }
+    for ( var attr in attributes ) {
+        if ( node.getAttribute( attr ) !== attributes[ attr ] ) {
+            return false;
+        }
+    }
+    return true;
 }
-function getNearest ( node, tag, attributes ) {
-    do {
+function getNearest ( node, root, tag, attributes ) {
+    while ( node && node !== root ) {
         if ( hasTagAttributes( node, tag, attributes ) ) {
             return node;
         }
-    } while ( node = node.parentNode );
+        node = node.parentNode;
+    }
     return null;
 }
+function isOrContains ( parent, node ) {
+    while ( node ) {
+        if ( node === parent ) {
+            return true;
+        }
+        node = node.parentNode;
+    }
+    return false;
+}
 
-function getPath ( node ) {
+function getPath ( node, root ) {
     var parent = node.parentNode,
         path, id, className, classNames, dir;
-    if ( !parent || node.nodeType !== ELEMENT_NODE ) {
-        path = parent ? getPath( parent ) : '';
+    if ( node === root ) {
+        path = '';
     } else {
-        path = getPath( parent );
-        path += ( path ? '>' : '' ) + node.nodeName;
-        if ( id = node.id ) {
-            path += '#' + id;
-        }
-        if ( className = node.className.trim() ) {
-            classNames = className.split( /\s\s*/ );
-            classNames.sort();
-            path += '.';
-            path += classNames.join( '.' );
-        }
-        if ( dir = node.dir ) {
-            path += '[dir=' + dir + ']';
+        path = getPath( parent, root );
+        if ( node.nodeType === ELEMENT_NODE ) {
+            path += ( path ? '>' : '' ) + node.nodeName;
+            if ( id = node.id ) {
+                path += '#' + id;
+            }
+            if ( className = node.className.trim() ) {
+                classNames = className.split( /\s\s*/ );
+                classNames.sort();
+                path += '.';
+                path += classNames.join( '.' );
+            }
+            if ( dir = node.dir ) {
+                path += '[dir=' + dir + ']';
+            }
         }
     }
     return path;
@@ -158,16 +169,16 @@ function createElement ( doc, tag, props, children ) {
     return el;
 }
 
-function fixCursor ( node ) {
+function fixCursor ( node, root ) {
     // In Webkit and Gecko, block level elements are collapsed and
     // unfocussable if they have no content. To remedy this, a <BR> must be
     // inserted. In Opera and IE, we just need a textnode in order for the
     // cursor to appear.
     var doc = node.ownerDocument,
-        root = node,
+        originalNode = node,
         fixer, child;
 
-    if ( node.nodeName === 'BODY' ) {
+    if ( node === root ) {
         if ( !( child = node.firstChild ) || child.nodeName === 'BR' ) {
             fixer = getSquireInstance( doc ).createDefaultBlock();
             if ( child ) {
@@ -227,11 +238,11 @@ function fixCursor ( node ) {
         node.appendChild( fixer );
     }
 
-    return root;
+    return originalNode;
 }
 
 // Recursively examine container nodes and wrap any inline children.
-function fixContainer ( container ) {
+function fixContainer ( container, root ) {
     var children = container.childNodes,
         doc = container.ownerDocument,
         wrapper = null,
@@ -254,7 +265,7 @@ function fixContainer ( container ) {
                 wrapper = createElement( doc,
                     config.blockTag, config.blockAttributes );
             }
-            fixCursor( wrapper );
+            fixCursor( wrapper, root );
             if ( isBR ) {
                 container.replaceChild( wrapper, child );
             } else {
@@ -265,20 +276,21 @@ function fixContainer ( container ) {
             wrapper = null;
         }
         if ( isContainer( child ) ) {
-            fixContainer( child );
+            fixContainer( child, root );
         }
     }
     if ( wrapper ) {
-        container.appendChild( fixCursor( wrapper ) );
+        container.appendChild( fixCursor( wrapper, root ) );
     }
     return container;
 }
 
-function split ( node, offset, stopNode ) {
+function split ( node, offset, stopNode, root ) {
     var nodeType = node.nodeType,
         parent, clone, next;
     if ( nodeType === TEXT_NODE && node !== stopNode ) {
-        return split( node.parentNode, node.splitText( offset ), stopNode );
+        return split(
+            node.parentNode, node.splitText( offset ), stopNode, root );
     }
     if ( nodeType === ELEMENT_NODE ) {
         if ( typeof( offset ) === 'number' ) {
@@ -301,7 +313,8 @@ function split ( node, offset, stopNode ) {
         }
 
         // Maintain li numbering if inside a quote.
-        if ( node.nodeName === 'OL' && getNearest( node, 'BLOCKQUOTE' ) ) {
+        if ( node.nodeName === 'OL' &&
+                getNearest( node, root, 'BLOCKQUOTE' ) ) {
             clone.start = ( +node.start || 1 ) + node.childNodes.length - 1;
         }
 
@@ -309,8 +322,8 @@ function split ( node, offset, stopNode ) {
         // of a node lower down the tree!
 
         // We need something in the element in order for the cursor to appear.
-        fixCursor( node );
-        fixCursor( clone );
+        fixCursor( node, root );
+        fixCursor( clone, root );
 
         // Inject clone after original node
         if ( next = node.nextSibling ) {
@@ -320,7 +333,7 @@ function split ( node, offset, stopNode ) {
         }
 
         // Keep on splitting up the tree
-        return split( parent, clone, stopNode );
+        return split( parent, clone, stopNode, root );
     }
     return offset;
 }
@@ -425,7 +438,7 @@ function mergeWithBlock ( block, next, range ) {
     }
 }
 
-function mergeContainers ( node ) {
+function mergeContainers ( node, root ) {
     var prev = node.previousSibling,
         first = node.firstChild,
         doc = node.ownerDocument,
@@ -451,14 +464,14 @@ function mergeContainers ( node ) {
         needsFix = !isContainer( node );
         prev.appendChild( empty( node ) );
         if ( needsFix ) {
-            fixContainer( prev );
+            fixContainer( prev, root );
         }
         if ( first ) {
-            mergeContainers( first );
+            mergeContainers( first, root );
         }
     } else if ( isListItem ) {
         prev = createElement( doc, 'DIV' );
         node.insertBefore( prev, first );
-        fixCursor( prev );
+        fixCursor( prev, root );
     }
 }
diff --git a/source/Range.js b/source/Range.js
index 7a157ad..0462593 100644
--- a/source/Range.js
+++ b/source/Range.js
@@ -80,7 +80,7 @@ var insertNodeInRange = function ( range, node ) {
     range.setEnd( endContainer, endOffset );
 };
 
-var extractContentsOfRange = function ( range, common ) {
+var extractContentsOfRange = function ( range, common, root ) {
     var startContainer = range.startContainer,
         startOffset = range.startOffset,
         endContainer = range.endContainer,
@@ -94,8 +94,8 @@ var extractContentsOfRange = function ( range, common ) {
         common = common.parentNode;
     }
 
-    var endNode = split( endContainer, endOffset, common ),
-        startNode = split( startContainer, startOffset, common ),
+    var endNode = split( endContainer, endOffset, common, root ),
+        startNode = split( startContainer, startOffset, common, root ),
         frag = common.ownerDocument.createDocumentFragment(),
         next, before, after;
 
@@ -127,12 +127,12 @@ var extractContentsOfRange = function ( range, common ) {
     range.setStart( startContainer, startOffset );
     range.collapse( true );
 
-    fixCursor( common );
+    fixCursor( common, root );
 
     return frag;
 };
 
-var deleteContentsOfRange = function ( range ) {
+var deleteContentsOfRange = function ( range, root ) {
     // Move boundaries up as much as possible to reduce need to split.
     // But we need to check whether we've moved the boundary outside of a
     // block. If so, the entire block will be removed, so we shouldn't merge
@@ -145,7 +145,7 @@ var deleteContentsOfRange = function ( range ) {
             ( isInline( endBlock ) || isBlock( endBlock ) );
 
     // Remove selected range
-    var frag = extractContentsOfRange( range );
+    var frag = extractContentsOfRange( range, null, root );
 
     // Move boundaries back down tree so that they are inside the blocks.
     // If we don't do this, the range may be collapsed to a point between
@@ -154,8 +154,8 @@ var deleteContentsOfRange = function ( range ) {
 
     // If we split into two different blocks, merge the blocks.
     if ( needsMerge ) {
-        startBlock = getStartBlockOfRange( range );
-        endBlock = getEndBlockOfRange( range );
+        startBlock = getStartBlockOfRange( range, root );
+        endBlock = getEndBlockOfRange( range, root );
         if ( startBlock && endBlock && startBlock !== endBlock ) {
             mergeWithBlock( startBlock, endBlock, range );
         }
@@ -163,15 +163,14 @@ var deleteContentsOfRange = function ( range ) {
 
     // Ensure block has necessary children
     if ( startBlock ) {
-        fixCursor( startBlock );
+        fixCursor( startBlock, root );
     }
 
-    // Ensure body has a block-level element in it.
-    var body = range.endContainer.ownerDocument.body,
-        child = body.firstChild;
+    // Ensure root has a block-level element in it.
+    var child = root.firstChild;
     if ( !child || child.nodeName === 'BR' ) {
-        fixCursor( body );
-        range.selectNodeContents( body.firstChild );
+        fixCursor( root, root );
+        range.selectNodeContents( root.firstChild );
     } else {
         range.collapse( false );
     }
@@ -180,7 +179,7 @@ var deleteContentsOfRange = function ( range ) {
 
 // ---
 
-var insertTreeFragmentIntoRange = function ( range, frag ) {
+var insertTreeFragmentIntoRange = function ( range, frag, root ) {
     // Check if it's all inline content
     var allInline = true,
         children = frag.childNodes,
@@ -194,7 +193,7 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
 
     // Delete any selected content
     if ( !range.collapsed ) {
-        deleteContentsOfRange( range );
+        deleteContentsOfRange( range, root );
     }
 
     // Move range down into text nodes
@@ -206,11 +205,14 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
         range.collapse( false );
     } else {
         // Otherwise...
-        // 1. Split up to blockquote (if a parent) or body
+        // 1. Split up to blockquote (if a parent) or root
         var splitPoint = range.startContainer,
-            nodeAfterSplit = split( splitPoint, range.startOffset,
-                getNearest( splitPoint.parentNode, 'BLOCKQUOTE' ) ||
-                splitPoint.ownerDocument.body ),
+            nodeAfterSplit = split(
+                splitPoint,
+                range.startOffset,
+                getNearest( splitPoint.parentNode, root, 'BLOCKQUOTE' ) || root,
+                root
+            ),
             nodeBeforeSplit = nodeAfterSplit.previousSibling,
             startContainer = nodeBeforeSplit,
             startOffset = startContainer.childNodes.length,
@@ -246,15 +248,15 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
 
         // 3. Fix cursor then insert block(s) in the fragment
         node = frag;
-        while ( node = getNextBlock( node ) ) {
-            fixCursor( node );
+        while ( node = getNextBlock( node, root ) ) {
+            fixCursor( node, root );
         }
         parent.insertBefore( frag, nodeAfterSplit );
 
         // 4. Remove empty nodes created either side of split, then
         // merge containers at the edges.
         next = nodeBeforeSplit.nextSibling;
-        node = getPreviousBlock( next );
+        node = getPreviousBlock( next, root );
         if ( !/\S/.test( node.textContent ) ) {
             do {
                 parent = node.parentNode;
@@ -273,12 +275,12 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
         }
         // Merge inserted containers with edges of split
         if ( isContainer( next ) ) {
-            mergeContainers( next );
+            mergeContainers( next, root );
         }
 
         prev = nodeAfterSplit.previousSibling;
         node = isBlock( nodeAfterSplit ) ?
-            nodeAfterSplit : getNextBlock( nodeAfterSplit );
+            nodeAfterSplit : getNextBlock( nodeAfterSplit, root );
         if ( !/\S/.test( node.textContent ) ) {
             do {
                 parent = node.parentNode;
@@ -296,7 +298,7 @@ var insertTreeFragmentIntoRange = function ( range, frag ) {
         }
         // Merge inserted containers with edges of split
         if ( nodeAfterSplit && isContainer( nodeAfterSplit ) ) {
-            mergeContainers( nodeAfterSplit );
+            mergeContainers( nodeAfterSplit, root );
         }
 
         range.setStart( startContainer, startOffset );
@@ -408,18 +410,18 @@ var moveRangeBoundariesUpTree = function ( range, common ) {
 
 // Returns the first block at least partially contained by the range,
 // or null if no block is contained by the range.
-var getStartBlockOfRange = function ( range ) {
+var getStartBlockOfRange = function ( range, root ) {
     var container = range.startContainer,
         block;
 
     // If inline, get the containing block.
     if ( isInline( container ) ) {
-        block = getPreviousBlock( container );
+        block = getPreviousBlock( container, root );
     } else if ( isBlock( container ) ) {
         block = container;
     } else {
         block = getNodeBefore( container, range.startOffset );
-        block = getNextBlock( block );
+        block = getNextBlock( block, root );
     }
     // Check the block actually intersects the range
     return block && isNodeContainedInRange( range, block, true ) ? block : null;
@@ -427,25 +429,24 @@ var getStartBlockOfRange = function ( range ) {
 
 // Returns the last block at least partially contained by the range,
 // or null if no block is contained by the range.
-var getEndBlockOfRange = function ( range ) {
+var getEndBlockOfRange = function ( range, root ) {
     var container = range.endContainer,
         block, child;
 
     // If inline, get the containing block.
     if ( isInline( container ) ) {
-        block = getPreviousBlock( container );
+        block = getPreviousBlock( container, root );
     } else if ( isBlock( container ) ) {
         block = container;
     } else {
         block = getNodeAfter( container, range.endOffset );
         if ( !block ) {
-            block = container.ownerDocument.body;
+            block = root;
             while ( child = block.lastChild ) {
                 block = child;
             }
         }
-        block = getPreviousBlock( block );
-
+        block = getPreviousBlock( block, root );
     }
     // Check the block actually intersects the range
     return block && isNodeContainedInRange( range, block, true ) ? block : null;
@@ -460,7 +461,7 @@ var contentWalker = new TreeWalker( null,
     }
 );
 
-var rangeDoesStartAtBlockBoundary = function ( range ) {
+var rangeDoesStartAtBlockBoundary = function ( range, root ) {
     var startContainer = range.startContainer,
         startOffset = range.startOffset;
 
@@ -476,12 +477,12 @@ var rangeDoesStartAtBlockBoundary = function ( range ) {
     }
 
     // Otherwise, look for any previous content in the same block.
-    contentWalker.root = getStartBlockOfRange( range );
+    contentWalker.root = getStartBlockOfRange( range, root );
 
     return !contentWalker.previousNode();
 };
 
-var rangeDoesEndAtBlockBoundary = function ( range ) {
+var rangeDoesEndAtBlockBoundary = function ( range, root ) {
     var endContainer = range.endContainer,
         endOffset = range.endOffset,
         length;
@@ -500,14 +501,14 @@ var rangeDoesEndAtBlockBoundary = function ( range ) {
     }
 
     // Otherwise, look for any further content in the same block.
-    contentWalker.root = getEndBlockOfRange( range );
+    contentWalker.root = getEndBlockOfRange( range, root );
 
     return !contentWalker.nextNode();
 };
 
-var expandRangeToBlockBoundaries = function ( range ) {
-    var start = getStartBlockOfRange( range ),
-        end = getEndBlockOfRange( range ),
+var expandRangeToBlockBoundaries = function ( range, root ) {
+    var start = getStartBlockOfRange( range, root ),
+        end = getEndBlockOfRange( range, root ),
         parent;
 
     if ( start && end ) {
