diff --git a/wp-includes/js/customize-loader.js b/wp-includes/js/customize-loader.js
index 094452620b..fe240eed67 100644
--- a/wp-includes/js/customize-loader.js
+++ b/wp-includes/js/customize-loader.js
@@ -1 +1 @@
-if(typeof wp==="undefined"){var wp={}}(function(a,b){var c={initialize:function(){this.body=b(document.body);this.element=b("#customize-container");this.base=b(".admin-url",this.element).val();this.doc_title=b(document).attr("title");this.element.on("click",".close-full-overlay",function(){c.close();return false});this.element.on("click",".collapse-sidebar",function(){c.element.toggleClass("collapsed");return false})},open:function(d){d.customize="on";this.element.append("<iframe />");this.iframe=b("iframe").attr("src",this.base+"?"+jQuery.param(d));b("iframe").load(function(){title=b(this).contents().find("title").text();b(document).attr("title",title)});this.element.fadeIn(200,function(){c.body.addClass("customize-active full-overlay-active")})},close:function(){this.element.fadeOut(200,function(){c.iframe.remove();c.iframe=null;c.body.removeClass("customize-active full-overlay-active");b(document).attr("title",c.doc_title)})}};b(function(){c.initialize();b(".thickbox-preview").click(function(g){var d,f,e;g.preventDefault();g.stopImmediatePropagation();d=b(this).attr("href");f=d.match("template=([^&]*)")[1];e=d.match("stylesheet=([^&]*)")[1];c.open({template:f,stylesheet:e})}).filter(function(){return"Preview"==b(this).text()}).text("Customize")});a.CustomizeLoader=c})(wp,jQuery);
\ No newline at end of file
+if(typeof wp==="undefined"){var wp={}}(function(a,b){var c={initialize:function(){this.body=b(document.body);this.element=b("#customize-container");this.base=b(".admin-url",this.element).val();this.element.on("click",".close-full-overlay",function(){c.close();return false});this.element.on("click",".collapse-sidebar",function(){c.element.toggleClass("collapsed");return false})},open:function(d){d.customize="on";this.iframe=b("<iframe />",{src:this.base+"?"+jQuery.param(d)}).appendTo(this.element);this.element.fadeIn(200,function(){c.body.addClass("customize-active full-overlay-active")})},close:function(){this.element.fadeOut(200,function(){c.iframe.remove();c.iframe=null;c.body.removeClass("customize-active full-overlay-active")})}};b(function(){c.initialize();b(".thickbox-preview").click(function(g){var d,f,e;g.preventDefault();g.stopImmediatePropagation();d=b(this).attr("href");f=d.match("template=([^&]*)")[1];e=d.match("stylesheet=([^&]*)")[1];c.open({template:f,stylesheet:e})}).filter(function(){return"Preview"==b(this).text()}).text("Customize")});a.CustomizeLoader=c})(wp,jQuery);
\ No newline at end of file
diff --git a/wp-includes/version.php b/wp-includes/version.php
index cdbda13526..86c25bf465 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '3.4-alpha-20249';
+$wp_version = '3.4-alpha-20251';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.