Index: /FCKeditor/trunk/editor/_source/internals/fckdomtools.js
===================================================================
--- /FCKeditor/trunk/editor/_source/internals/fckdomtools.js	(revision 1142)
+++ /FCKeditor/trunk/editor/_source/internals/fckdomtools.js	(revision 1143)
@@ -969,5 +969,5 @@
 		// Appends the offsets for the entire element hierarchy.
 		offset += element.offsetTop ;
-		while ( ( element = element.parentNode ) )
+		while ( ( element = element.offsetParent ) )
 			offset += element.offsetTop || 0 ;