Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 4820)
+++ /CKEditor/trunk/CHANGES.html	(revision 4821)
@@ -73,4 +73,5 @@
 		<li><a href="http://dev.fckeditor.net/ticket/4899">#4899</a> : Fixed unable to undo pre-formatted style.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/4900">#4900</a> : Fixed ratio-lock inconsistent between browsers.</li>
+		<li><a href="http://dev.fckeditor.net/ticket/4901">#4901</a> : Fixed unable to edit any link with popup window's features in Firefox.</li>
 	</ul>
 	<h3>
Index: /CKEditor/trunk/_source/plugins/link/dialogs/link.js
===================================================================
--- /CKEditor/trunk/_source/plugins/link/dialogs/link.js	(revision 4820)
+++ /CKEditor/trunk/_source/plugins/link/dialogs/link.js	(revision 4821)
@@ -1239,5 +1239,5 @@
 
 					onclickList.push( featureList.join( ',' ), '\'); return false;' );
-					attributes[ CKEDITOR.env.ie || CKEDITOR.env.webkit ? '_cke_pa_onclick' : 'onclick' ] = onclickList.join( '' );
+					attributes[ '_cke_pa_onclick' ] = onclickList.join( '' );
 				}
 				else