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diff --git a/lib/dijit/BackgroundIframe.js.uncompressed.js b/lib/dijit/BackgroundIframe.js.uncompressed.js
new file mode 100644
index 000000000..15133be6b
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+++ b/lib/dijit/BackgroundIframe.js.uncompressed.js
@@ -0,0 +1,113 @@
+define("dijit/BackgroundIframe", [
+	"require",			// require.toUrl
+	".",	// to export dijit.BackgroundIframe
+	"dojo/_base/config",
+	"dojo/dom-construct", // domConstruct.create
+	"dojo/dom-style", // domStyle.set
+	"dojo/_base/lang", // lang.extend lang.hitch
+	"dojo/on",
+	"dojo/_base/sniff", // has("ie"), has("mozilla"), has("quirks")
+	"dojo/_base/window" // win.doc.createElement
+], function(require, dijit, config, domConstruct, domStyle, lang, on, has, win){
+
+	// module:
+	//		dijit/BackgroundIFrame
+	// summary:
+	//		new dijit.BackgroundIframe(node)
+	//		Makes a background iframe as a child of node, that fills
+	//		area (and position) of node
+
+	// TODO: remove _frames, it isn't being used much, since popups never release their
+	// iframes (see [22236])
+	var _frames = new function(){
+		// summary:
+		//		cache of iframes
+
+		var queue = [];
+
+		this.pop = function(){
+			var iframe;
+			if(queue.length){
+				iframe = queue.pop();
+				iframe.style.display="";
+			}else{
+				if(has("ie") < 9){
+					var burl = config["dojoBlankHtmlUrl"] || require.toUrl("dojo/resources/blank.html") || "javascript:\"\"";
+					var html="<iframe src='" + burl + "' role='presentation'"
+						+ " style='position: absolute; left: 0px; top: 0px;"
+						+ "z-index: -1; filter:Alpha(Opacity=\"0\");'>";
+					iframe = win.doc.createElement(html);
+				}else{
+					iframe = domConstruct.create("iframe");
+					iframe.src = 'javascript:""';
+					iframe.className = "dijitBackgroundIframe";
+					iframe.setAttribute("role", "presentation");
+					domStyle.set(iframe, "opacity", 0.1);
+				}
+				iframe.tabIndex = -1; // Magic to prevent iframe from getting focus on tab keypress - as style didn't work.
+			}
+			return iframe;
+		};
+
+		this.push = function(iframe){
+			iframe.style.display="none";
+			queue.push(iframe);
+		}
+	}();
+
+
+	dijit.BackgroundIframe = function(/*DomNode*/ node){
+		// summary:
+		//		For IE/FF z-index schenanigans. id attribute is required.
+		//
+		// description:
+		//		new dijit.BackgroundIframe(node)
+		//			Makes a background iframe as a child of node, that fills
+		//			area (and position) of node
+
+		if(!node.id){ throw new Error("no id"); }
+		if(has("ie") || has("mozilla")){
+			var iframe = (this.iframe = _frames.pop());
+			node.appendChild(iframe);
+			if(has("ie")<7 || has("quirks")){
+				this.resize(node);
+				this._conn = on(node, 'resize', lang.hitch(this, function(){
+					this.resize(node);
+				}));
+			}else{
+				domStyle.set(iframe, {
+					width: '100%',
+					height: '100%'
+				});
+			}
+		}
+	};
+
+	lang.extend(dijit.BackgroundIframe, {
+		resize: function(node){
+			// summary:
+			// 		Resize the iframe so it's the same size as node.
+			//		Needed on IE6 and IE/quirks because height:100% doesn't work right.
+			if(this.iframe){
+				domStyle.set(this.iframe, {
+					width: node.offsetWidth + 'px',
+					height: node.offsetHeight + 'px'
+				});
+			}
+		},
+		destroy: function(){
+			// summary:
+			//		destroy the iframe
+			if(this._conn){
+				this._conn.remove();
+				this._conn = null;
+			}
+			if(this.iframe){
+				_frames.push(this.iframe);
+				delete this.iframe;
+			}
+		}
+	});
+
+	return dijit.BackgroundIframe;
+});