Index: /CKEditor/trunk/_source/plugins/panel/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/panel/plugin.js	(revision 3220)
+++ /CKEditor/trunk/_source/plugins/panel/plugin.js	(revision 3221)
@@ -113,4 +113,6 @@
 				var doc = new CKEDITOR.dom.document( iframe.$.contentWindow.document );
 
+				var className = iframe.getParent().getParent().getAttribute( 'class' );
+
 				// Initialize the IFRAME document body.
 				doc.$.open();
@@ -120,6 +122,7 @@
 						'<head>' +
 							'<link type="text/css" rel=stylesheet href="' + this.css.join( '"><link type="text/css" rel="stylesheet" href="' ) + '">' +
+							'<style>.' + className + '_container{visibility:hidden}</style>' + 
 						'</head>' +
-						'<body class="cke_panel_frame" style="margin:0;padding:0">' +
+						'<body class="' + className + '_container cke_panel_frame" style="margin:0;padding:0">' +
 						'</body>' +
 					'<\/html>' );
Index: /CKEditor/trunk/_source/skins/default/editor.css
===================================================================
--- /CKEditor/trunk/_source/skins/default/editor.css	(revision 3220)
+++ /CKEditor/trunk/_source/skins/default/editor.css	(revision 3221)
@@ -15,5 +15,6 @@
 
 /* Restore the container visibility */
-body .cke_skin_default
+html .cke_skin_default,
+html .cke_skin_default_container
 {
 	visibility: visible;
