Index: typo3/js/extjs/iframepanel.js
===================================================================
--- typo3/js/extjs/iframepanel.js	(revision 8904)
+++ typo3/js/extjs/iframepanel.js	(working copy)
@@ -38,7 +38,7 @@
 	iframe: null,
 	src: Ext.isIE && Ext.isSecure ? Ext.SSL_SECURE_URL : 'about:blank',
 	maskMessage: 'loading ...',
-	doMask: true,
+	doMask: false,
 
 		// component build
 	initComponent: function() {