Index: /FCKeditor/trunk/editor/_source/classes/fckpanel.js
===================================================================
--- /FCKeditor/trunk/editor/_source/classes/fckpanel.js	(revision 1383)
+++ /FCKeditor/trunk/editor/_source/classes/fckpanel.js	(revision 1384)
@@ -218,5 +218,5 @@
 
 		// Minus the offsets provided by any positioned parent element of the panel iframe.
-		var positionedAncestor = FCKDomTools.GetPositionedAncestor( FCKTools.GetElementWindow( this._IFrame ), this._IFrame.parentNode ) ;
+		var positionedAncestor = FCKDomTools.GetPositionedAncestor( this._IFrame.parentNode ) ;
 		if ( positionedAncestor )
 		{
Index: /FCKeditor/trunk/editor/_source/internals/fckdomtools.js
===================================================================
--- /FCKeditor/trunk/editor/_source/internals/fckdomtools.js	(revision 1383)
+++ /FCKeditor/trunk/editor/_source/internals/fckdomtools.js	(revision 1384)
@@ -925,18 +925,18 @@
 	},
 
-	GetCurrentElementStyle : function( w, element, attrName )
+	GetCurrentElementStyle : function( element, propertyName )
 	{
 		if ( FCKBrowserInfo.IsIE )
-			return element.currentStyle[attrName] ;
+			return element.currentStyle[ propertyName ] ;
 		else
-			return w.getComputedStyle( element, '' )[attrName] ;
-	},
-
-	GetPositionedAncestor : function( w, element )
+			return element.ownerDocument.defaultView.getComputedStyle( element, '' ).getPropertyValue( propertyName ) ;
+	},
+
+	GetPositionedAncestor : function( element )
 	{
 		var currentElement = element ;
 		while ( currentElement != FCKTools.GetElementDocument( currentElement ).documentElement )
 		{
-			if ( this.GetCurrentElementStyle( w, currentElement, 'position' ) != 'static' )
+			if ( this.GetCurrentElementStyle( currentElement, 'position' ) != 'static' )
 				return currentElement ;
 			currentElement = currentElement.parentNode ;
@@ -967,5 +967,5 @@
 			// needs, but needs investigation if we will be using this function
 			// in other places.
-			offset += parseInt( this.GetCurrentElementStyle( window, element, 'marginBottom' ) || 0, 10 ) ;
+			offset += parseInt( this.GetCurrentElementStyle( element, 'marginBottom' ) || 0, 10 ) ;
 		}
 
@@ -984,2 +984,3 @@
 
 
+
Index: /FCKeditor/trunk/editor/_source/internals/fcktools.js
===================================================================
--- /FCKeditor/trunk/editor/_source/internals/fcktools.js	(revision 1383)
+++ /FCKeditor/trunk/editor/_source/internals/fcktools.js	(revision 1384)
@@ -463,6 +463,6 @@
 	// 2. It matters is when we're in IE and the element has no positioned ancestor.
 	// Otherwise the values should be ignored.
-	if ( FCKDomTools.GetCurrentElementStyle( w, w.document.body, 'position') != 'static' 
-			|| ( FCKBrowserInfo.IsIE && FCKDomTools.GetPositionedAncestor( w, node ) == null ) )
+	if ( FCKDomTools.GetCurrentElementStyle( w.document.body, 'position') != 'static' 
+			|| ( FCKBrowserInfo.IsIE && FCKDomTools.GetPositionedAncestor( node ) == null ) )
 	{
 		x += w.document.body.offsetLeft ;