Fixed compatibility with jQueryUI-1.9

plugins/managesieve/Changelog

@@ -1,6 +1,7 @@
 - Fixed filter activation/deactivation confirmation message (#1488765)
 - Moved rcube_* classes to <plugin>/lib/Roundcube for compat. with Roundcube Framework autoloader
 - Fixed filter selection after filter deletion (#1488832)
+- Fixed compatibility with jQueryUI-1.9
 
 * version 6.0 [2012-10-03]
 -----------------------------------------------------------

plugins/managesieve/managesieve.js

@@ -754,7 +754,7 @@ rcube_webmail.prototype.managesieve_create = function()
 
     // load form in the iframe
     var frame = $('<iframe>').attr({src: url, frameborder: 0})
-    dialog.empty().append(frame).dialog('dialog').resize();
+    dialog.empty().append(frame).dialog('widget').resize();
 
     // Change [Next Step] button with [Save] button
     buttons = {};