Landed the patch, by Diego, that 1) Removes browser sniffing from the ready...

Landed the patch, by Diego, that 1) Removes browser sniffing from the ready code and 2) Provides some form of fallback DOM Ready for Iframes in IE. Closes #2614.

src/event.js

@@ -526,21 +526,33 @@ function bindReady(){
 		// Use the handy event callback
 		document.addEventListener( "DOMContentLoaded", jQuery.ready, false );
 
-	// If IE is used and is not in a frame
-	// Continually check to see if the document is ready
-	if ( jQuery.browser.msie && window == top ) (function(){
-		if (jQuery.isReady) return;
-		try {
-			// If IE is used, use the trick by Diego Perini
-			// http://javascript.nwbox.com/IEContentLoaded/
-			document.documentElement.doScroll("left");
-		} catch( error ) {
-			setTimeout( arguments.callee, 0 );
-			return;
-		}
-		// and execute any waiting functions
-		jQuery.ready();
-	})();
+	// If IE event model is used
+	if ( document.attachEvent )
+		// ensure firing before onload,
+		// maybe late but safe also for iframes
+		document.attachEvent("onreadystatechange", function(e) {
+			if ( document.readyState == "complete" ) {
+				document.detachEvent("onreadystatechange", arguments.callee );
+				jQuery.ready();
+			}
+		});
+
+	// If IE and not an iframe
+	if ( document.documentElement.doScroll && !window.frameElement )
+		// continually check to see if the document is ready
+		(function(){
+			if (jQuery.isReady) return;
+			try {
+				// If IE is used, use the trick by Diego Perini
+				// http://javascript.nwbox.com/IEContentLoaded/
+				document.documentElement.doScroll("left");
+			} catch( error ) {
+				setTimeout( arguments.callee, 0 );
+				return;
+			}
+			// and execute any waiting functions
+			jQuery.ready();
+		})();
 
 	if ( jQuery.browser.opera )
 		document.addEventListener( "DOMContentLoaded", function () {