Fixes timing bug introduced by removing default fade animation.

Author: Wilto

css/structure/jquery.mobile.popup.css

@@ -1,8 +1,3 @@
-.ui-page.ui-popup-open .ui-header-fixed,
-.ui-page.ui-popup-open .ui-footer-fixed {
-	position: absolute;
-}
-
 .ui-popup-screen {
 	background-image: url(data:image/gif;base64,R0lGODlhAQABAID/AMDAwAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==); /* Necessary to set some form of background to ensure element is clickable in IE6/7. While legacy IE won’t understand the data-URI’d image, it ensures no additional requests occur in all other browsers with little overhead. */
 	top: 0px;
@@ -15,14 +10,38 @@
 	z-index: 1099;
 }
 
-.ui-popup-screen.in {
+@-webkit-keyframes popup-fadein {
+    from { opacity: 0; }
+    to { opacity: 0.5; }
+}
+
+@-moz-keyframes popup-fadein {
+    from { opacity: 0; }
+    to { opacity: 0.5; }
+}
+
+@-webkit-keyframes popup-fadeout {
+    from { opacity: 0.5; }
+    to { opacity: 0; }
+}
+
+@-moz-keyframes popup-fadeout {
+    from { opacity: 0.5; }
+    to { opacity: 0; }
+}
+
+.ui-popup-screen.fade.in {
 	opacity: 0.5;
 	filter: Alpha(Opacity=50);
+	-webkit-animation-name: popup-fadein;
+	-moz-animation-name: popup-fadein;
 }
 
-.ui-popup-screen.out {
+.ui-popup-screen.fade.out {
 	opacity: 0;
 	filter: Alpha(Opacity=0);
+	-webkit-animation-name: popup-fadeout;
+	-moz-animation-name: popup-fadeout;
 }
 
 .ui-popup-container {

js/widgets/popup.js

@@ -412,9 +412,12 @@ define( [ "jquery",
 		_animate: function( args ) {
 			if ( this.options.overlayTheme && args.additionalCondition ) {
 				this._ui.screen
-					.animationComplete( $.proxy( args.prereqs.screen, "resolve" ) )
 					.removeClass( args.classToRemove )
 					.addClass( args.screenClassToAdd );
+
+				setTimeout(function() {
+					args.prereqs.screen.resolve();
+				}, 0);
 			} else {
 				args.prereqs.screen.resolve();
 			}
@@ -424,9 +427,12 @@ define( [ "jquery",
 					this._applyTransition( args.transition );
 				}
 				this._ui.container
-					.animationComplete( $.proxy( args.prereqs.container, "resolve" ) )
 					.addClass( args.containerClassToAdd )
 					.removeClass( args.classToRemove );
+
+				setTimeout(function() {
+					args.prereqs.container.resolve();
+				}, 0);
 			} else {
 				args.prereqs.container.resolve();
 			}