From e0fe00bea666828211a348f03f4101e15f531b4b Mon Sep 17 00:00:00 2001
From: Matthew Borden <matthewborden@icloud.com>
Date: Mon, 7 Jul 2014 22:35:28 +1000
Subject: [PATCH] Update & Add: Refactored Loading of UI & Stylesheets/Scripts

---
 Demo.html                         |  80 +-----
 build/Squire-UI.css               |   2 +
 build/Squire-UI.html              |  72 +++---
 build/Squire-UI.js                | 232 +++++++++++++++++-
 build/assets/jQuery/jQuery.js     |   4 +
 build/assets/lazyload/lazyload.js | 390 ++++++++++++++++++++++++++++++
 ui/Squire-UI.css                  |   2 +
 ui/Squire-UI.html                 |  72 +++---
 ui/Squire-UI.js                   | 232 +++++++++++++++++-
 ui/assets/jQuery/jQuery.js        |   4 +
 ui/assets/lazyload/lazyload.js    | 390 ++++++++++++++++++++++++++++++
 11 files changed, 1300 insertions(+), 180 deletions(-)
 create mode 100644 build/assets/jQuery/jQuery.js
 create mode 100644 build/assets/lazyload/lazyload.js
 create mode 100644 ui/assets/jQuery/jQuery.js
 create mode 100644 ui/assets/lazyload/lazyload.js
diff --git a/Demo.html b/Demo.html
index 39ad530..a6fddaa 100644
--- a/Demo.html
+++ b/Demo.html
@@ -4,89 +4,13 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
     <meta charset="UTF-8">
     <title>HTML Editor Test</title>
-    <style type="text/css" media="screen">
-    body {
-      position:relative;
-      margin:0 auto;
-      padding:50px;
-      width:540px;
-      font:400 14px/1.24 helvetica,arial,sans-serif;
-      text-shadow:0 1px 0 #fff;
-    }
-
-    iframe {
-      border: none;
-    }
-
-    h1 {
-        font-size:1.95em
-    }
-
-    span {
-        cursor:pointer;
-        text-decoration:underline
-    }
-
-    p {
-        margin:5px 0
-    }
-    </style>
     <!--[if IE 8]>
     <script type="text/javascript" src="build/ie8.js"></script>
     <![endif]-->
-    <script type="text/javascript" charset="utf-8">
-    var editor;
-    document.addEventListener( 'click', function ( e ) {
-      var id = e.target.id,
-          value;
-      if ( id && editor && editor[ id ] ) {
-        if ( e.target.className === 'prompt' ) {
-          value = prompt( 'Value:' );
-        }
-        editor[ id ]( value );
-      }
-    }, false );
-    </script>
+    <script src="build/Squire-UI.js" type="text/javascript"></script>
 </head>
 <body>
 <h1>HTML Editor Test</h1>
-<header>
-  <p>This is a really simple demo, with the most trivial of UI integrations</p>
-  <p>
-  <span id="bold2">Bold</span>
-  <span id="removeBold">Unbold</span>
-  <span id="italic">Italic</span>
-  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
-  <span id="removeItalic">Unitalic</span>
-  <span id="underline">Underline</span>
-  <span id="removeUnderline">Deunderline</span>
-  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
-  <span id="setFontSize" class="prompt">Font size</span>
-  <span id="setFontFace" class="prompt">Font face</span>
-  </p>
-  <p>
-  <span id="setTextColour" class="prompt">Text colour</span>
-  <span id="setHighlightColour" class="prompt">Text highlight</span>
-  <span id="makeLink" class="prompt">Link</span>
-  </p>
-  <p>
-    <span id="increaseQuoteLevel">Quote</span>
-    <span id="decreaseQuoteLevel">Dequote</span>
-  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
-    <span id="makeUnorderedList">List</span>
-    <span id="removeList">Unlist</span>
-  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
-  <span id="insertImage" class="prompt">Insert image</span>
-  <span id="setHTML" class="prompt">Set HTML</span>
-  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
-    <span id="undo">Undo</span>
-    <span id="redo">Redo</span>
-  </p>
-</header>
-
-<iframe src="build/Squire-UI.html" width="500" height="300"></iframe>
-<iframe src="build/document.html" onload="top.editor=this.contentWindow.editor" width="500" height="500"></iframe>
-
-
+<textarea id="foo"></textarea>
 </body>
 </html>
diff --git a/build/Squire-UI.css b/build/Squire-UI.css
index 4010a16..db8a986 100644
--- a/build/Squire-UI.css
+++ b/build/Squire-UI.css
@@ -57,3 +57,5 @@
     top:0;
     right:0;
 }
+
+  
\ No newline at end of file
diff --git a/build/Squire-UI.html b/build/Squire-UI.html
index 42270c9..84495d4 100644
--- a/build/Squire-UI.html
+++ b/build/Squire-UI.html
@@ -1,47 +1,31 @@
-<html>
-
-<head>
-    <link href="Squire-UI.css" rel="stylesheet" type="text/css" type="text/css" rel="stylesheet" />
-    <link href="assets/drop/drop-theme-arrows.css" type="text/css" rel="stylesheet" />
-
-    <link href="assets/font-awesome/font-awesome.min.css" type="text/css" rel="stylesheet" />
-</head>
-
-<body>
-    <header class="menu" contenteditable="false">
-        <div class="group">
-            <div class="item"><i class="fa fa-bold"></i></div>
-            <div class="item"><i class="fa fa-italic"></i></div>
-            <div class="item"><i class="fa fa-underline"></i></div>
-            <div id="font" class="item">
-                <i class="fa fa-font"></i>
-            </div>
-        </div>
-        <div class="group">
-            <div class="item"><i class="fa fa-link"></i></div>
-            <div class="item"><i class="fa fa-quote-right"></i></div>
-            <div class="item"><i class="fa fa-list"></i></div>
-            <div class="item">
-                <i class="fa fa-picture-o"></i>
-            </div>
-        </div>
-        <div class="group">
-            <div class="item"><i class="fa fa-undo"></i></div>
-            <div class="item"><i class="fa fa-undo flip"></i></div>
-        </div>
-    </header>
-    <div class="templates hidden">
-        <div class="drop-font">
-            <i class="fa fa-chevron-up quit" onclick="this.parentNode.parentNode.removeChild(this.parentNode)"></i>
-            Text Size: <input type="number" min="12" max="72" step="6" value="12" name="font-size">
-            <br>
-            Font: <input type="text">
-
+<div class="menu" contenteditable="false">
+    <div class="group">
+        <div class="item"><i class="fa fa-bold"></i></div>
+        <div class="item"><i class="fa fa-italic"></i></div>
+        <div class="item"><i class="fa fa-underline"></i></div>
+        <div id="font" class="item">
+            <i class="fa fa-font"></i>
         </div>
     </div>
+    <div class="group">
+        <div class="item"><i class="fa fa-link"></i></div>
+        <div class="item"><i class="fa fa-quote-right"></i></div>
+        <div class="item"><i class="fa fa-list"></i></div>
+        <div class="item">
+            <i class="fa fa-picture-o"></i>
+        </div>
+    </div>
+    <div class="group">
+        <div class="item"><i class="fa fa-undo"></i></div>
+        <div class="item"><i class="fa fa-undo flip"></i></div>
+    </div>
+</div>
+<div class="templates hidden">
+    <div class="drop-font">
+        <i class="fa fa-chevron-up quit" onclick="this.parentNode.parentNode.removeChild(this.parentNode)"></i>
+        Text Size: <input type="number" min="12" max="72" step="6" value="12" name="font-size">
+        <br>
+        Font: <input type="text">
 
-    <script src="assets/drop/drop.min.js" type="text/javascript"></script>
-    <script src="Squire-UI.js" type="text/javascript"></script>
-</body>
-
-</html>
\ No newline at end of file
+    </div>
+</div>
diff --git a/build/Squire-UI.js b/build/Squire-UI.js
index ebd6c9c..7b94f9f 100644
--- a/build/Squire-UI.js
+++ b/build/Squire-UI.js
@@ -1,13 +1,231 @@
+
+LazyLoad = (function (doc) {
+  var env,
+
+  head,
+  pending = {},
+  pollCount = 0,
+  queue = {css: [], js: []},
+  styleSheets = doc.styleSheets;
+  function createNode(name, attrs) {
+    var node = doc.createElement(name), attr;
+
+    for (attr in attrs) {
+      if (attrs.hasOwnProperty(attr)) {
+        node.setAttribute(attr, attrs[attr]);
+      }
+    }
+
+    return node;
+  }
+
+  function finish(type) {
+    var p = pending[type],
+        callback,
+        urls;
+
+    if (p) {
+      callback = p.callback;
+      urls     = p.urls;
+
+      urls.shift();
+      pollCount = 0;
+
+      // If this is the last of the pending URLs, execute the callback and
+      // start the next request in the queue (if any).
+      if (!urls.length) {
+        callback && callback.call(p.context, p.obj);
+        pending[type] = null;
+        queue[type].length && load(type);
+      }
+    }
+  }
+
+  function getEnv() {
+    var ua = navigator.userAgent;
+
+    env = {
+        async: doc.createElement('script').async === true
+    };
+
+    (env.webkit = /AppleWebKit\//.test(ua))
+      || (env.ie = /MSIE|Trident/.test(ua))
+      || (env.opera = /Opera/.test(ua))
+      || (env.gecko = /Gecko\//.test(ua))
+      || (env.unknown = true);
+  }
+
+  function load(type, urls, callback, obj, context) {
+    var _finish = function () { finish(type); },
+        isCSS   = type === 'css',
+        nodes   = [],
+        i, len, node, p, pendingUrls, url;
+
+    env || getEnv();
+
+    if (urls) {
+      urls = typeof urls === 'string' ? [urls] : urls.concat();
+
+      if (isCSS || env.async || env.gecko || env.opera) {
+        // Load in parallel.
+        queue[type].push({
+          urls    : urls,
+          callback: callback,
+          obj     : obj,
+          context : context
+        });
+      } else {
+        // Load sequentially.
+        for (i = 0, len = urls.length; i < len; ++i) {
+          queue[type].push({
+            urls    : [urls[i]],
+            callback: i === len - 1 ? callback : null, // callback is only added to the last URL
+            obj     : obj,
+            context : context
+          });
+        }
+      }
+    }
+
+    // If a previous load request of this type is currently in progress, we'll
+    // wait our turn. Otherwise, grab the next item in the queue.
+    if (pending[type] || !(p = pending[type] = queue[type].shift())) {
+      return;
+    }
+
+    head || (head = doc.head || doc.getElementsByTagName('head')[0]);
+    pendingUrls = p.urls.concat();
+
+    for (i = 0, len = pendingUrls.length; i < len; ++i) {
+      url = pendingUrls[i];
+
+      if (isCSS) {
+          node = env.gecko ? createNode('style') : createNode('link', {
+            href: url,
+            rel : 'stylesheet'
+          });
+      } else {
+        node = createNode('script', {src: url});
+        node.async = false;
+      }
+
+      node.className = 'lazyload';
+      node.setAttribute('charset', 'utf-8');
+
+      if (env.ie && !isCSS && 'onreadystatechange' in node && !('draggable' in node)) {
+        node.onreadystatechange = function () {
+          if (/loaded|complete/.test(node.readyState)) {
+            node.onreadystatechange = null;
+            _finish();
+          }
+        };
+      } else if (isCSS && (env.gecko || env.webkit)) {
+        if (env.webkit) {
+          p.urls[i] = node.href; // resolve relative URLs (or polling won't work)
+          pollWebKit();
+        } else {
+         node.innerHTML = '@import "' + url + '";';
+          pollGecko(node);
+        }
+      } else {
+        node.onload = node.onerror = _finish;
+      }
+
+      nodes.push(node);
+    }
+
+    for (i = 0, len = nodes.length; i < len; ++i) {
+      head.appendChild(nodes[i]);
+    }
+  }
+
+  function pollGecko(node) {
+    var hasRules;
+
+    try {
+      // We don't really need to store this value or ever refer to it again, but
+      // if we don't store it, Closure Compiler assumes the code is useless and
+      // removes it.
+      hasRules = !!node.sheet.cssRules;
+    } catch (ex) {
+      // An exception means the stylesheet is still loading.
+      pollCount += 1;
+
+      if (pollCount < 200) {
+        setTimeout(function () { pollGecko(node); }, 50);
+      } else {
+        // We've been polling for 10 seconds and nothing's happened. Stop
+        // polling and finish the pending requests to avoid blocking further
+        // requests.
+        hasRules && finish('css');
+      }
+
+      return;
+    }
+
+    // If we get here, the stylesheet has loaded.
+    finish('css');
+  }
+
+  function pollWebKit() {
+    var css = pending.css, i;
+
+    if (css) {
+      i = styleSheets.length;
+
+      // Look for a stylesheet matching the pending URL.
+      while (--i >= 0) {
+        if (styleSheets[i].href === css.urls[0]) {
+          finish('css');
+          break;
+        }
+      }
+
+      pollCount += 1;
+
+      if (css) {
+        if (pollCount < 200) {
+          setTimeout(pollWebKit, 50);
+        } else {
+          // We've been polling for 10 seconds and nothing's happened, which may
+          // indicate that the stylesheet has been removed from the document
+          // before it had a chance to load. Stop polling and finish the pending
+          // request to prevent blocking further requests.
+          finish('css');
+        }
+      }
+    }
+  }
+
+  return {
+	css: function (urls, callback, obj, context) {
+      load('css', urls, callback, obj, context);
+    },
+    js: function (urls, callback, obj, context) {
+      load('js', urls, callback, obj, context);
+    }
+
+  };
+})(this.document);
+
+
 (function() {
-    var drop, quit;
+	LazyLoad.js(['build/squire.js','build/assets/jQuery/jQuery.js','build/assets/drop/drop.min.js']);
+	LazyLoad.css(['build/Squire-UI.css','build/assets/font-awesome/font-awesome.min.css', 'build/assets/drop/drop-theme-hubspot-popovers.css']);
+	
+	SquireUI = function (options) {
+		var originElement = $(options.replace);
+		var container = originElement.parent();
+		
+		originElement.remove();
+		var editorContainer = $('<iframe />').appendTo(container);
+		var editorDocument = editorContainer[0].contentWindow.document;
 
-    drop = new Drop({
-        target: document.querySelector('#font'),
-        content: document.querySelector('.drop-font').innerHTML,
-        position: 'bottom left',
-        openOn: 'click'
-    });
+		var editor = new Squire(editorDocument);
 
+		return editor;
+
+	};
 
 })();
 
diff --git a/build/assets/jQuery/jQuery.js b/build/assets/jQuery/jQuery.js
new file mode 100644
index 0000000..d1608e3
--- /dev/null
+++ b/build/assets/jQuery/jQuery.js
@@ -0,0 +1,4 @@
+/*! jQuery v1.11.1 | (c) 2005, 2014 jQuery Foundation, Inc. | jquery.org/license */
+!function(a,b){"object"==typeof module&&"object"==typeof module.exports?module.exports=a.document?b(a,!0):function(a){if(!a.document)throw new Error("jQuery requires a window with a document");return b(a)}:b(a)}("undefined"!=typeof window?window:this,function(a,b){var c=[],d=c.slice,e=c.concat,f=c.push,g=c.indexOf,h={},i=h.toString,j=h.hasOwnProperty,k={},l="1.11.1",m=function(a,b){return new m.fn.init(a,b)},n=/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,o=/^-ms-/,p=/-([\da-z])/gi,q=function(a,b){return b.toUpperCase()};m.fn=m.prototype={jquery:l,constructor:m,selector:"",length:0,toArray:function(){return d.call(this)},get:function(a){return null!=a?0>a?this[a+this.length]:this[a]:d.call(this)},pushStack:function(a){var b=m.merge(this.constructor(),a);return b.prevObject=this,b.context=this.context,b},each:function(a,b){return m.each(this,a,b)},map:function(a){return this.pushStack(m.map(this,function(b,c){return a.call(b,c,b)}))},slice:function(){return this.pushStack(d.apply(this,arguments))},first:function(){return this.eq(0)},last:function(){return this.eq(-1)},eq:function(a){var b=this.length,c=+a+(0>a?b:0);return this.pushStack(c>=0&&b>c?[this[c]]:[])},end:function(){return this.prevObject||this.constructor(null)},push:f,sort:c.sort,splice:c.splice},m.extend=m.fn.extend=function(){var a,b,c,d,e,f,g=arguments[0]||{},h=1,i=arguments.length,j=!1;for("boolean"==typeof g&&(j=g,g=arguments[h]||{},h++),"object"==typeof g||m.isFunction(g)||(g={}),h===i&&(g=this,h--);i>h;h++)if(null!=(e=arguments[h]))for(d in e)a=g[d],c=e[d],g!==c&&(j&&c&&(m.isPlainObject(c)||(b=m.isArray(c)))?(b?(b=!1,f=a&&m.isArray(a)?a:[]):f=a&&m.isPlainObject(a)?a:{},g[d]=m.extend(j,f,c)):void 0!==c&&(g[d]=c));return g},m.extend({expando:"jQuery"+(l+Math.random()).replace(/\D/g,""),isReady:!0,error:function(a){throw new 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diff --git a/build/assets/lazyload/lazyload.js b/build/assets/lazyload/lazyload.js
new file mode 100644
index 0000000..11beebd
--- /dev/null
+++ b/build/assets/lazyload/lazyload.js
@@ -0,0 +1,390 @@
+/*jslint browser: true, eqeqeq: true, bitwise: true, newcap: true, immed: true, regexp: false */
+
+/**
+LazyLoad makes it easy and painless to lazily load one or more external
+JavaScript or CSS files on demand either during or after the rendering of a web
+page.
+
+Supported browsers include Firefox 2+, IE6+, Safari 3+ (including Mobile
+Safari), Google Chrome, and Opera 9+. Other browsers may or may not work and
+are not officially supported.
+
+Visit https://github.com/rgrove/lazyload/ for more info.
+
+Copyright (c) 2011 Ryan Grove <ryan@wonko.com>
+All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the 'Software'), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+@module lazyload
+@class LazyLoad
+@static
+*/
+
+LazyLoad = (function (doc) {
+  // -- Private Variables ------------------------------------------------------
+
+  // User agent and feature test information.
+  var env,
+
+  // Reference to the <head> element (populated lazily).
+  head,
+
+  // Requests currently in progress, if any.
+  pending = {},
+
+  // Number of times we've polled to check whether a pending stylesheet has
+  // finished loading. If this gets too high, we're probably stalled.
+  pollCount = 0,
+
+  // Queued requests.
+  queue = {css: [], js: []},
+
+  // Reference to the browser's list of stylesheets.
+  styleSheets = doc.styleSheets;
+
+  // -- Private Methods --------------------------------------------------------
+
+  /**
+  Creates and returns an HTML element with the specified name and attributes.
+
+  @method createNode
+  @param {String} name element name
+  @param {Object} attrs name/value mapping of element attributes
+  @return {HTMLElement}
+  @private
+  */
+  function createNode(name, attrs) {
+    var node = doc.createElement(name), attr;
+
+    for (attr in attrs) {
+      if (attrs.hasOwnProperty(attr)) {
+        node.setAttribute(attr, attrs[attr]);
+      }
+    }
+
+    return node;
+  }
+
+  /**
+  Called when the current pending resource of the specified type has finished
+  loading. Executes the associated callback (if any) and loads the next
+  resource in the queue.
+
+  @method finish
+  @param {String} type resource type ('css' or 'js')
+  @private
+  */
+  function finish(type) {
+    var p = pending[type],
+        callback,
+        urls;
+
+    if (p) {
+      callback = p.callback;
+      urls     = p.urls;
+
+      urls.shift();
+      pollCount = 0;
+
+      // If this is the last of the pending URLs, execute the callback and
+      // start the next request in the queue (if any).
+      if (!urls.length) {
+        callback && callback.call(p.context, p.obj);
+        pending[type] = null;
+        queue[type].length && load(type);
+      }
+    }
+  }
+
+  /**
+  Populates the <code>env</code> variable with user agent and feature test
+  information.
+
+  @method getEnv
+  @private
+  */
+  function getEnv() {
+    var ua = navigator.userAgent;
+
+    env = {
+      // True if this browser supports disabling async mode on dynamically
+      // created script nodes. See
+      // http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
+      async: doc.createElement('script').async === true
+    };
+
+    (env.webkit = /AppleWebKit\//.test(ua))
+      || (env.ie = /MSIE|Trident/.test(ua))
+      || (env.opera = /Opera/.test(ua))
+      || (env.gecko = /Gecko\//.test(ua))
+      || (env.unknown = true);
+  }
+
+  /**
+  Loads the specified resources, or the next resource of the specified type
+  in the queue if no resources are specified. If a resource of the specified
+  type is already being loaded, the new request will be queued until the
+  first request has been finished.
+
+  When an array of resource URLs is specified, those URLs will be loaded in
+  parallel if it is possible to do so while preserving execution order. All
+  browsers support parallel loading of CSS, but only Firefox and Opera
+  support parallel loading of scripts. In other browsers, scripts will be
+  queued and loaded one at a time to ensure correct execution order.
+
+  @method load
+  @param {String} type resource type ('css' or 'js')
+  @param {String|Array} urls (optional) URL or array of URLs to load
+  @param {Function} callback (optional) callback function to execute when the
+    resource is loaded
+  @param {Object} obj (optional) object to pass to the callback function
+  @param {Object} context (optional) if provided, the callback function will
+    be executed in this object's context
+  @private
+  */
+  function load(type, urls, callback, obj, context) {
+    var _finish = function () { finish(type); },
+        isCSS   = type === 'css',
+        nodes   = [],
+        i, len, node, p, pendingUrls, url;
+
+    env || getEnv();
+
+    if (urls) {
+      // If urls is a string, wrap it in an array. Otherwise assume it's an
+      // array and create a copy of it so modifications won't be made to the
+      // original.
+      urls = typeof urls === 'string' ? [urls] : urls.concat();
+
+      // Create a request object for each URL. If multiple URLs are specified,
+      // the callback will only be executed after all URLs have been loaded.
+      //
+      // Sadly, Firefox and Opera are the only browsers capable of loading
+      // scripts in parallel while preserving execution order. In all other
+      // browsers, scripts must be loaded sequentially.
+      //
+      // All browsers respect CSS specificity based on the order of the link
+      // elements in the DOM, regardless of the order in which the stylesheets
+      // are actually downloaded.
+      if (isCSS || env.async || env.gecko || env.opera) {
+        // Load in parallel.
+        queue[type].push({
+          urls    : urls,
+          callback: callback,
+          obj     : obj,
+          context : context
+        });
+      } else {
+        // Load sequentially.
+        for (i = 0, len = urls.length; i < len; ++i) {
+          queue[type].push({
+            urls    : [urls[i]],
+            callback: i === len - 1 ? callback : null, // callback is only added to the last URL
+            obj     : obj,
+            context : context
+          });
+        }
+      }
+    }
+
+    // If a previous load request of this type is currently in progress, we'll
+    // wait our turn. Otherwise, grab the next item in the queue.
+    if (pending[type] || !(p = pending[type] = queue[type].shift())) {
+      return;
+    }
+
+    head || (head = doc.head || doc.getElementsByTagName('head')[0]);
+    pendingUrls = p.urls.concat();
+
+    for (i = 0, len = pendingUrls.length; i < len; ++i) {
+      url = pendingUrls[i];
+
+      if (isCSS) {
+          node = env.gecko ? createNode('style') : createNode('link', {
+            href: url,
+            rel : 'stylesheet'
+          });
+      } else {
+        node = createNode('script', {src: url});
+        node.async = false;
+      }
+
+      node.className = 'lazyload';
+      node.setAttribute('charset', 'utf-8');
+
+      if (env.ie && !isCSS && 'onreadystatechange' in node && !('draggable' in node)) {
+        node.onreadystatechange = function () {
+          if (/loaded|complete/.test(node.readyState)) {
+            node.onreadystatechange = null;
+            _finish();
+          }
+        };
+      } else if (isCSS && (env.gecko || env.webkit)) {
+        // Gecko and WebKit don't support the onload event on link nodes.
+        if (env.webkit) {
+          // In WebKit, we can poll for changes to document.styleSheets to
+          // figure out when stylesheets have loaded.
+          p.urls[i] = node.href; // resolve relative URLs (or polling won't work)
+          pollWebKit();
+        } else {
+          // In Gecko, we can import the requested URL into a <style> node and
+          // poll for the existence of node.sheet.cssRules. Props to Zach
+          // Leatherman for calling my attention to this technique.
+          node.innerHTML = '@import "' + url + '";';
+          pollGecko(node);
+        }
+      } else {
+        node.onload = node.onerror = _finish;
+      }
+
+      nodes.push(node);
+    }
+
+    for (i = 0, len = nodes.length; i < len; ++i) {
+      head.appendChild(nodes[i]);
+    }
+  }
+
+  /**
+  Begins polling to determine when the specified stylesheet has finished loading
+  in Gecko. Polling stops when all pending stylesheets have loaded or after 10
+  seconds (to prevent stalls).
+
+  Thanks to Zach Leatherman for calling my attention to the @import-based
+  cross-domain technique used here, and to Oleg Slobodskoi for an earlier
+  same-domain implementation. See Zach's blog for more details:
+  http://www.zachleat.com/web/2010/07/29/load-css-dynamically/
+
+  @method pollGecko
+  @param {HTMLElement} node Style node to poll.
+  @private
+  */
+  function pollGecko(node) {
+    var hasRules;
+
+    try {
+      // We don't really need to store this value or ever refer to it again, but
+      // if we don't store it, Closure Compiler assumes the code is useless and
+      // removes it.
+      hasRules = !!node.sheet.cssRules;
+    } catch (ex) {
+      // An exception means the stylesheet is still loading.
+      pollCount += 1;
+
+      if (pollCount < 200) {
+        setTimeout(function () { pollGecko(node); }, 50);
+      } else {
+        // We've been polling for 10 seconds and nothing's happened. Stop
+        // polling and finish the pending requests to avoid blocking further
+        // requests.
+        hasRules && finish('css');
+      }
+
+      return;
+    }
+
+    // If we get here, the stylesheet has loaded.
+    finish('css');
+  }
+
+  /**
+  Begins polling to determine when pending stylesheets have finished loading
+  in WebKit. Polling stops when all pending stylesheets have loaded or after 10
+  seconds (to prevent stalls).
+
+  @method pollWebKit
+  @private
+  */
+  function pollWebKit() {
+    var css = pending.css, i;
+
+    if (css) {
+      i = styleSheets.length;
+
+      // Look for a stylesheet matching the pending URL.
+      while (--i >= 0) {
+        if (styleSheets[i].href === css.urls[0]) {
+          finish('css');
+          break;
+        }
+      }
+
+      pollCount += 1;
+
+      if (css) {
+        if (pollCount < 200) {
+          setTimeout(pollWebKit, 50);
+        } else {
+          // We've been polling for 10 seconds and nothing's happened, which may
+          // indicate that the stylesheet has been removed from the document
+          // before it had a chance to load. Stop polling and finish the pending
+          // request to prevent blocking further requests.
+          finish('css');
+        }
+      }
+    }
+  }
+
+  return {
+
+    /**
+    Requests the specified CSS URL or URLs and executes the specified
+    callback (if any) when they have finished loading. If an array of URLs is
+    specified, the stylesheets will be loaded in parallel and the callback
+    will be executed after all stylesheets have finished loading.
+
+    @method css
+    @param {String|Array} urls CSS URL or array of CSS URLs to load
+    @param {Function} callback (optional) callback function to execute when
+      the specified stylesheets are loaded
+    @param {Object} obj (optional) object to pass to the callback function
+    @param {Object} context (optional) if provided, the callback function
+      will be executed in this object's context
+    @static
+    */
+    css: function (urls, callback, obj, context) {
+      load('css', urls, callback, obj, context);
+    },
+
+    /**
+    Requests the specified JavaScript URL or URLs and executes the specified
+    callback (if any) when they have finished loading. If an array of URLs is
+    specified and the browser supports it, the scripts will be loaded in
+    parallel and the callback will be executed after all scripts have
+    finished loading.
+
+    Currently, only Firefox and Opera support parallel loading of scripts while
+    preserving execution order. In other browsers, scripts will be
+    queued and loaded one at a time to ensure correct execution order.
+
+    @method js
+    @param {String|Array} urls JS URL or array of JS URLs to load
+    @param {Function} callback (optional) callback function to execute when
+      the specified scripts are loaded
+    @param {Object} obj (optional) object to pass to the callback function
+    @param {Object} context (optional) if provided, the callback function
+      will be executed in this object's context
+    @static
+    */
+    js: function (urls, callback, obj, context) {
+      load('js', urls, callback, obj, context);
+    }
+
+  };
+})(this.document);
\ No newline at end of file
diff --git a/ui/Squire-UI.css b/ui/Squire-UI.css
index 4010a16..db8a986 100644
--- a/ui/Squire-UI.css
+++ b/ui/Squire-UI.css
@@ -57,3 +57,5 @@
     top:0;
     right:0;
 }
+
+  
\ No newline at end of file
diff --git a/ui/Squire-UI.html b/ui/Squire-UI.html
index 42270c9..84495d4 100644
--- a/ui/Squire-UI.html
+++ b/ui/Squire-UI.html
@@ -1,47 +1,31 @@
-<html>
-
-<head>
-    <link href="Squire-UI.css" rel="stylesheet" type="text/css" type="text/css" rel="stylesheet" />
-    <link href="assets/drop/drop-theme-arrows.css" type="text/css" rel="stylesheet" />
-
-    <link href="assets/font-awesome/font-awesome.min.css" type="text/css" rel="stylesheet" />
-</head>
-
-<body>
-    <header class="menu" contenteditable="false">
-        <div class="group">
-            <div class="item"><i class="fa fa-bold"></i></div>
-            <div class="item"><i class="fa fa-italic"></i></div>
-            <div class="item"><i class="fa fa-underline"></i></div>
-            <div id="font" class="item">
-                <i class="fa fa-font"></i>
-            </div>
-        </div>
-        <div class="group">
-            <div class="item"><i class="fa fa-link"></i></div>
-            <div class="item"><i class="fa fa-quote-right"></i></div>
-            <div class="item"><i class="fa fa-list"></i></div>
-            <div class="item">
-                <i class="fa fa-picture-o"></i>
-            </div>
-        </div>
-        <div class="group">
-            <div class="item"><i class="fa fa-undo"></i></div>
-            <div class="item"><i class="fa fa-undo flip"></i></div>
-        </div>
-    </header>
-    <div class="templates hidden">
-        <div class="drop-font">
-            <i class="fa fa-chevron-up quit" onclick="this.parentNode.parentNode.removeChild(this.parentNode)"></i>
-            Text Size: <input type="number" min="12" max="72" step="6" value="12" name="font-size">
-            <br>
-            Font: <input type="text">
-
+<div class="menu" contenteditable="false">
+    <div class="group">
+        <div class="item"><i class="fa fa-bold"></i></div>
+        <div class="item"><i class="fa fa-italic"></i></div>
+        <div class="item"><i class="fa fa-underline"></i></div>
+        <div id="font" class="item">
+            <i class="fa fa-font"></i>
         </div>
     </div>
+    <div class="group">
+        <div class="item"><i class="fa fa-link"></i></div>
+        <div class="item"><i class="fa fa-quote-right"></i></div>
+        <div class="item"><i class="fa fa-list"></i></div>
+        <div class="item">
+            <i class="fa fa-picture-o"></i>
+        </div>
+    </div>
+    <div class="group">
+        <div class="item"><i class="fa fa-undo"></i></div>
+        <div class="item"><i class="fa fa-undo flip"></i></div>
+    </div>
+</div>
+<div class="templates hidden">
+    <div class="drop-font">
+        <i class="fa fa-chevron-up quit" onclick="this.parentNode.parentNode.removeChild(this.parentNode)"></i>
+        Text Size: <input type="number" min="12" max="72" step="6" value="12" name="font-size">
+        <br>
+        Font: <input type="text">
 
-    <script src="assets/drop/drop.min.js" type="text/javascript"></script>
-    <script src="Squire-UI.js" type="text/javascript"></script>
-</body>
-
-</html>
\ No newline at end of file
+    </div>
+</div>
diff --git a/ui/Squire-UI.js b/ui/Squire-UI.js
index ebd6c9c..7b94f9f 100644
--- a/ui/Squire-UI.js
+++ b/ui/Squire-UI.js
@@ -1,13 +1,231 @@
+
+LazyLoad = (function (doc) {
+  var env,
+
+  head,
+  pending = {},
+  pollCount = 0,
+  queue = {css: [], js: []},
+  styleSheets = doc.styleSheets;
+  function createNode(name, attrs) {
+    var node = doc.createElement(name), attr;
+
+    for (attr in attrs) {
+      if (attrs.hasOwnProperty(attr)) {
+        node.setAttribute(attr, attrs[attr]);
+      }
+    }
+
+    return node;
+  }
+
+  function finish(type) {
+    var p = pending[type],
+        callback,
+        urls;
+
+    if (p) {
+      callback = p.callback;
+      urls     = p.urls;
+
+      urls.shift();
+      pollCount = 0;
+
+      // If this is the last of the pending URLs, execute the callback and
+      // start the next request in the queue (if any).
+      if (!urls.length) {
+        callback && callback.call(p.context, p.obj);
+        pending[type] = null;
+        queue[type].length && load(type);
+      }
+    }
+  }
+
+  function getEnv() {
+    var ua = navigator.userAgent;
+
+    env = {
+        async: doc.createElement('script').async === true
+    };
+
+    (env.webkit = /AppleWebKit\//.test(ua))
+      || (env.ie = /MSIE|Trident/.test(ua))
+      || (env.opera = /Opera/.test(ua))
+      || (env.gecko = /Gecko\//.test(ua))
+      || (env.unknown = true);
+  }
+
+  function load(type, urls, callback, obj, context) {
+    var _finish = function () { finish(type); },
+        isCSS   = type === 'css',
+        nodes   = [],
+        i, len, node, p, pendingUrls, url;
+
+    env || getEnv();
+
+    if (urls) {
+      urls = typeof urls === 'string' ? [urls] : urls.concat();
+
+      if (isCSS || env.async || env.gecko || env.opera) {
+        // Load in parallel.
+        queue[type].push({
+          urls    : urls,
+          callback: callback,
+          obj     : obj,
+          context : context
+        });
+      } else {
+        // Load sequentially.
+        for (i = 0, len = urls.length; i < len; ++i) {
+          queue[type].push({
+            urls    : [urls[i]],
+            callback: i === len - 1 ? callback : null, // callback is only added to the last URL
+            obj     : obj,
+            context : context
+          });
+        }
+      }
+    }
+
+    // If a previous load request of this type is currently in progress, we'll
+    // wait our turn. Otherwise, grab the next item in the queue.
+    if (pending[type] || !(p = pending[type] = queue[type].shift())) {
+      return;
+    }
+
+    head || (head = doc.head || doc.getElementsByTagName('head')[0]);
+    pendingUrls = p.urls.concat();
+
+    for (i = 0, len = pendingUrls.length; i < len; ++i) {
+      url = pendingUrls[i];
+
+      if (isCSS) {
+          node = env.gecko ? createNode('style') : createNode('link', {
+            href: url,
+            rel : 'stylesheet'
+          });
+      } else {
+        node = createNode('script', {src: url});
+        node.async = false;
+      }
+
+      node.className = 'lazyload';
+      node.setAttribute('charset', 'utf-8');
+
+      if (env.ie && !isCSS && 'onreadystatechange' in node && !('draggable' in node)) {
+        node.onreadystatechange = function () {
+          if (/loaded|complete/.test(node.readyState)) {
+            node.onreadystatechange = null;
+            _finish();
+          }
+        };
+      } else if (isCSS && (env.gecko || env.webkit)) {
+        if (env.webkit) {
+          p.urls[i] = node.href; // resolve relative URLs (or polling won't work)
+          pollWebKit();
+        } else {
+         node.innerHTML = '@import "' + url + '";';
+          pollGecko(node);
+        }
+      } else {
+        node.onload = node.onerror = _finish;
+      }
+
+      nodes.push(node);
+    }
+
+    for (i = 0, len = nodes.length; i < len; ++i) {
+      head.appendChild(nodes[i]);
+    }
+  }
+
+  function pollGecko(node) {
+    var hasRules;
+
+    try {
+      // We don't really need to store this value or ever refer to it again, but
+      // if we don't store it, Closure Compiler assumes the code is useless and
+      // removes it.
+      hasRules = !!node.sheet.cssRules;
+    } catch (ex) {
+      // An exception means the stylesheet is still loading.
+      pollCount += 1;
+
+      if (pollCount < 200) {
+        setTimeout(function () { pollGecko(node); }, 50);
+      } else {
+        // We've been polling for 10 seconds and nothing's happened. Stop
+        // polling and finish the pending requests to avoid blocking further
+        // requests.
+        hasRules && finish('css');
+      }
+
+      return;
+    }
+
+    // If we get here, the stylesheet has loaded.
+    finish('css');
+  }
+
+  function pollWebKit() {
+    var css = pending.css, i;
+
+    if (css) {
+      i = styleSheets.length;
+
+      // Look for a stylesheet matching the pending URL.
+      while (--i >= 0) {
+        if (styleSheets[i].href === css.urls[0]) {
+          finish('css');
+          break;
+        }
+      }
+
+      pollCount += 1;
+
+      if (css) {
+        if (pollCount < 200) {
+          setTimeout(pollWebKit, 50);
+        } else {
+          // We've been polling for 10 seconds and nothing's happened, which may
+          // indicate that the stylesheet has been removed from the document
+          // before it had a chance to load. Stop polling and finish the pending
+          // request to prevent blocking further requests.
+          finish('css');
+        }
+      }
+    }
+  }
+
+  return {
+	css: function (urls, callback, obj, context) {
+      load('css', urls, callback, obj, context);
+    },
+    js: function (urls, callback, obj, context) {
+      load('js', urls, callback, obj, context);
+    }
+
+  };
+})(this.document);
+
+
 (function() {
-    var drop, quit;
+	LazyLoad.js(['build/squire.js','build/assets/jQuery/jQuery.js','build/assets/drop/drop.min.js']);
+	LazyLoad.css(['build/Squire-UI.css','build/assets/font-awesome/font-awesome.min.css', 'build/assets/drop/drop-theme-hubspot-popovers.css']);
+	
+	SquireUI = function (options) {
+		var originElement = $(options.replace);
+		var container = originElement.parent();
+		
+		originElement.remove();
+		var editorContainer = $('<iframe />').appendTo(container);
+		var editorDocument = editorContainer[0].contentWindow.document;
 
-    drop = new Drop({
-        target: document.querySelector('#font'),
-        content: document.querySelector('.drop-font').innerHTML,
-        position: 'bottom left',
-        openOn: 'click'
-    });
+		var editor = new Squire(editorDocument);
 
+		return editor;
+
+	};
 
 })();
 
diff --git a/ui/assets/jQuery/jQuery.js b/ui/assets/jQuery/jQuery.js
new file mode 100644
index 0000000..d1608e3
--- /dev/null
+++ b/ui/assets/jQuery/jQuery.js
@@ -0,0 +1,4 @@
+/*! jQuery v1.11.1 | (c) 2005, 2014 jQuery Foundation, Inc. | jquery.org/license */
+!function(a,b){"object"==typeof module&&"object"==typeof module.exports?module.exports=a.document?b(a,!0):function(a){if(!a.document)throw new Error("jQuery requires a window with a document");return b(a)}:b(a)}("undefined"!=typeof window?window:this,function(a,b){var c=[],d=c.slice,e=c.concat,f=c.push,g=c.indexOf,h={},i=h.toString,j=h.hasOwnProperty,k={},l="1.11.1",m=function(a,b){return new m.fn.init(a,b)},n=/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,o=/^-ms-/,p=/-([\da-z])/gi,q=function(a,b){return b.toUpperCase()};m.fn=m.prototype={jquery:l,constructor:m,selector:"",length:0,toArray:function(){return d.call(this)},get:function(a){return null!=a?0>a?this[a+this.length]:this[a]:d.call(this)},pushStack:function(a){var b=m.merge(this.constructor(),a);return b.prevObject=this,b.context=this.context,b},each:function(a,b){return m.each(this,a,b)},map:function(a){return this.pushStack(m.map(this,function(b,c){return a.call(b,c,b)}))},slice:function(){return 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0})}),m.each({Height:"height",Width:"width"},function(a,b){m.each({padding:"inner"+a,content:b,"":"outer"+a},function(c,d){m.fn[d]=function(d,e){var f=arguments.length&&(c||"boolean"!=typeof d),g=c||(d===!0||e===!0?"margin":"border");return V(this,function(b,c,d){var e;return m.isWindow(b)?b.document.documentElement["client"+a]:9===b.nodeType?(e=b.documentElement,Math.max(b.body["scroll"+a],e["scroll"+a],b.body["offset"+a],e["offset"+a],e["client"+a])):void 0===d?m.css(b,c,g):m.style(b,c,d,g)},b,f?d:void 0,f,null)}})}),m.fn.size=function(){return this.length},m.fn.andSelf=m.fn.addBack,"function"==typeof define&&define.amd&&define("jquery",[],function(){return m});var ed=a.jQuery,fd=a.$;return m.noConflict=function(b){return a.$===m&&(a.$=fd),b&&a.jQuery===m&&(a.jQuery=ed),m},typeof b===K&&(a.jQuery=a.$=m),m});
\ No newline at end of file
diff --git a/ui/assets/lazyload/lazyload.js b/ui/assets/lazyload/lazyload.js
new file mode 100644
index 0000000..11beebd
--- /dev/null
+++ b/ui/assets/lazyload/lazyload.js
@@ -0,0 +1,390 @@
+/*jslint browser: true, eqeqeq: true, bitwise: true, newcap: true, immed: true, regexp: false */
+
+/**
+LazyLoad makes it easy and painless to lazily load one or more external
+JavaScript or CSS files on demand either during or after the rendering of a web
+page.
+
+Supported browsers include Firefox 2+, IE6+, Safari 3+ (including Mobile
+Safari), Google Chrome, and Opera 9+. Other browsers may or may not work and
+are not officially supported.
+
+Visit https://github.com/rgrove/lazyload/ for more info.
+
+Copyright (c) 2011 Ryan Grove <ryan@wonko.com>
+All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the 'Software'), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+@module lazyload
+@class LazyLoad
+@static
+*/
+
+LazyLoad = (function (doc) {
+  // -- Private Variables ------------------------------------------------------
+
+  // User agent and feature test information.
+  var env,
+
+  // Reference to the <head> element (populated lazily).
+  head,
+
+  // Requests currently in progress, if any.
+  pending = {},
+
+  // Number of times we've polled to check whether a pending stylesheet has
+  // finished loading. If this gets too high, we're probably stalled.
+  pollCount = 0,
+
+  // Queued requests.
+  queue = {css: [], js: []},
+
+  // Reference to the browser's list of stylesheets.
+  styleSheets = doc.styleSheets;
+
+  // -- Private Methods --------------------------------------------------------
+
+  /**
+  Creates and returns an HTML element with the specified name and attributes.
+
+  @method createNode
+  @param {String} name element name
+  @param {Object} attrs name/value mapping of element attributes
+  @return {HTMLElement}
+  @private
+  */
+  function createNode(name, attrs) {
+    var node = doc.createElement(name), attr;
+
+    for (attr in attrs) {
+      if (attrs.hasOwnProperty(attr)) {
+        node.setAttribute(attr, attrs[attr]);
+      }
+    }
+
+    return node;
+  }
+
+  /**
+  Called when the current pending resource of the specified type has finished
+  loading. Executes the associated callback (if any) and loads the next
+  resource in the queue.
+
+  @method finish
+  @param {String} type resource type ('css' or 'js')
+  @private
+  */
+  function finish(type) {
+    var p = pending[type],
+        callback,
+        urls;
+
+    if (p) {
+      callback = p.callback;
+      urls     = p.urls;
+
+      urls.shift();
+      pollCount = 0;
+
+      // If this is the last of the pending URLs, execute the callback and
+      // start the next request in the queue (if any).
+      if (!urls.length) {
+        callback && callback.call(p.context, p.obj);
+        pending[type] = null;
+        queue[type].length && load(type);
+      }
+    }
+  }
+
+  /**
+  Populates the <code>env</code> variable with user agent and feature test
+  information.
+
+  @method getEnv
+  @private
+  */
+  function getEnv() {
+    var ua = navigator.userAgent;
+
+    env = {
+      // True if this browser supports disabling async mode on dynamically
+      // created script nodes. See
+      // http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
+      async: doc.createElement('script').async === true
+    };
+
+    (env.webkit = /AppleWebKit\//.test(ua))
+      || (env.ie = /MSIE|Trident/.test(ua))
+      || (env.opera = /Opera/.test(ua))
+      || (env.gecko = /Gecko\//.test(ua))
+      || (env.unknown = true);
+  }
+
+  /**
+  Loads the specified resources, or the next resource of the specified type
+  in the queue if no resources are specified. If a resource of the specified
+  type is already being loaded, the new request will be queued until the
+  first request has been finished.
+
+  When an array of resource URLs is specified, those URLs will be loaded in
+  parallel if it is possible to do so while preserving execution order. All
+  browsers support parallel loading of CSS, but only Firefox and Opera
+  support parallel loading of scripts. In other browsers, scripts will be
+  queued and loaded one at a time to ensure correct execution order.
+
+  @method load
+  @param {String} type resource type ('css' or 'js')
+  @param {String|Array} urls (optional) URL or array of URLs to load
+  @param {Function} callback (optional) callback function to execute when the
+    resource is loaded
+  @param {Object} obj (optional) object to pass to the callback function
+  @param {Object} context (optional) if provided, the callback function will
+    be executed in this object's context
+  @private
+  */
+  function load(type, urls, callback, obj, context) {
+    var _finish = function () { finish(type); },
+        isCSS   = type === 'css',
+        nodes   = [],
+        i, len, node, p, pendingUrls, url;
+
+    env || getEnv();
+
+    if (urls) {
+      // If urls is a string, wrap it in an array. Otherwise assume it's an
+      // array and create a copy of it so modifications won't be made to the
+      // original.
+      urls = typeof urls === 'string' ? [urls] : urls.concat();
+
+      // Create a request object for each URL. If multiple URLs are specified,
+      // the callback will only be executed after all URLs have been loaded.
+      //
+      // Sadly, Firefox and Opera are the only browsers capable of loading
+      // scripts in parallel while preserving execution order. In all other
+      // browsers, scripts must be loaded sequentially.
+      //
+      // All browsers respect CSS specificity based on the order of the link
+      // elements in the DOM, regardless of the order in which the stylesheets
+      // are actually downloaded.
+      if (isCSS || env.async || env.gecko || env.opera) {
+        // Load in parallel.
+        queue[type].push({
+          urls    : urls,
+          callback: callback,
+          obj     : obj,
+          context : context
+        });
+      } else {
+        // Load sequentially.
+        for (i = 0, len = urls.length; i < len; ++i) {
+          queue[type].push({
+            urls    : [urls[i]],
+            callback: i === len - 1 ? callback : null, // callback is only added to the last URL
+            obj     : obj,
+            context : context
+          });
+        }
+      }
+    }
+
+    // If a previous load request of this type is currently in progress, we'll
+    // wait our turn. Otherwise, grab the next item in the queue.
+    if (pending[type] || !(p = pending[type] = queue[type].shift())) {
+      return;
+    }
+
+    head || (head = doc.head || doc.getElementsByTagName('head')[0]);
+    pendingUrls = p.urls.concat();
+
+    for (i = 0, len = pendingUrls.length; i < len; ++i) {
+      url = pendingUrls[i];
+
+      if (isCSS) {
+          node = env.gecko ? createNode('style') : createNode('link', {
+            href: url,
+            rel : 'stylesheet'
+          });
+      } else {
+        node = createNode('script', {src: url});
+        node.async = false;
+      }
+
+      node.className = 'lazyload';
+      node.setAttribute('charset', 'utf-8');
+
+      if (env.ie && !isCSS && 'onreadystatechange' in node && !('draggable' in node)) {
+        node.onreadystatechange = function () {
+          if (/loaded|complete/.test(node.readyState)) {
+            node.onreadystatechange = null;
+            _finish();
+          }
+        };
+      } else if (isCSS && (env.gecko || env.webkit)) {
+        // Gecko and WebKit don't support the onload event on link nodes.
+        if (env.webkit) {
+          // In WebKit, we can poll for changes to document.styleSheets to
+          // figure out when stylesheets have loaded.
+          p.urls[i] = node.href; // resolve relative URLs (or polling won't work)
+          pollWebKit();
+        } else {
+          // In Gecko, we can import the requested URL into a <style> node and
+          // poll for the existence of node.sheet.cssRules. Props to Zach
+          // Leatherman for calling my attention to this technique.
+          node.innerHTML = '@import "' + url + '";';
+          pollGecko(node);
+        }
+      } else {
+        node.onload = node.onerror = _finish;
+      }
+
+      nodes.push(node);
+    }
+
+    for (i = 0, len = nodes.length; i < len; ++i) {
+      head.appendChild(nodes[i]);
+    }
+  }
+
+  /**
+  Begins polling to determine when the specified stylesheet has finished loading
+  in Gecko. Polling stops when all pending stylesheets have loaded or after 10
+  seconds (to prevent stalls).
+
+  Thanks to Zach Leatherman for calling my attention to the @import-based
+  cross-domain technique used here, and to Oleg Slobodskoi for an earlier
+  same-domain implementation. See Zach's blog for more details:
+  http://www.zachleat.com/web/2010/07/29/load-css-dynamically/
+
+  @method pollGecko
+  @param {HTMLElement} node Style node to poll.
+  @private
+  */
+  function pollGecko(node) {
+    var hasRules;
+
+    try {
+      // We don't really need to store this value or ever refer to it again, but
+      // if we don't store it, Closure Compiler assumes the code is useless and
+      // removes it.
+      hasRules = !!node.sheet.cssRules;
+    } catch (ex) {
+      // An exception means the stylesheet is still loading.
+      pollCount += 1;
+
+      if (pollCount < 200) {
+        setTimeout(function () { pollGecko(node); }, 50);
+      } else {
+        // We've been polling for 10 seconds and nothing's happened. Stop
+        // polling and finish the pending requests to avoid blocking further
+        // requests.
+        hasRules && finish('css');
+      }
+
+      return;
+    }
+
+    // If we get here, the stylesheet has loaded.
+    finish('css');
+  }
+
+  /**
+  Begins polling to determine when pending stylesheets have finished loading
+  in WebKit. Polling stops when all pending stylesheets have loaded or after 10
+  seconds (to prevent stalls).
+
+  @method pollWebKit
+  @private
+  */
+  function pollWebKit() {
+    var css = pending.css, i;
+
+    if (css) {
+      i = styleSheets.length;
+
+      // Look for a stylesheet matching the pending URL.
+      while (--i >= 0) {
+        if (styleSheets[i].href === css.urls[0]) {
+          finish('css');
+          break;
+        }
+      }
+
+      pollCount += 1;
+
+      if (css) {
+        if (pollCount < 200) {
+          setTimeout(pollWebKit, 50);
+        } else {
+          // We've been polling for 10 seconds and nothing's happened, which may
+          // indicate that the stylesheet has been removed from the document
+          // before it had a chance to load. Stop polling and finish the pending
+          // request to prevent blocking further requests.
+          finish('css');
+        }
+      }
+    }
+  }
+
+  return {
+
+    /**
+    Requests the specified CSS URL or URLs and executes the specified
+    callback (if any) when they have finished loading. If an array of URLs is
+    specified, the stylesheets will be loaded in parallel and the callback
+    will be executed after all stylesheets have finished loading.
+
+    @method css
+    @param {String|Array} urls CSS URL or array of CSS URLs to load
+    @param {Function} callback (optional) callback function to execute when
+      the specified stylesheets are loaded
+    @param {Object} obj (optional) object to pass to the callback function
+    @param {Object} context (optional) if provided, the callback function
+      will be executed in this object's context
+    @static
+    */
+    css: function (urls, callback, obj, context) {
+      load('css', urls, callback, obj, context);
+    },
+
+    /**
+    Requests the specified JavaScript URL or URLs and executes the specified
+    callback (if any) when they have finished loading. If an array of URLs is
+    specified and the browser supports it, the scripts will be loaded in
+    parallel and the callback will be executed after all scripts have
+    finished loading.
+
+    Currently, only Firefox and Opera support parallel loading of scripts while
+    preserving execution order. In other browsers, scripts will be
+    queued and loaded one at a time to ensure correct execution order.
+
+    @method js
+    @param {String|Array} urls JS URL or array of JS URLs to load
+    @param {Function} callback (optional) callback function to execute when
+      the specified scripts are loaded
+    @param {Object} obj (optional) object to pass to the callback function
+    @param {Object} context (optional) if provided, the callback function
+      will be executed in this object's context
+    @static
+    */
+    js: function (urls, callback, obj, context) {
+      load('js', urls, callback, obj, context);
+    }
+
+  };
+})(this.document);
\ No newline at end of file
