Index: editor/fckeditor.html
===================================================================
--- editor/fckeditor.html	(revision 964)
+++ editor/fckeditor.html	(working copy)
@@ -296,7 +296,8 @@
 		if ( eInnerElement )
 		{
 			eInnerElement.style.height = 0 ;
-			eInnerElement.style.height = oCell.scrollHeight - 2 ;
+			var iCellBorderAndMargin = oCell.offsetHeight - oCell.clientHeight ;
+			eInnerElement.style.height = oCell.scrollHeight - iCellBorderAndMargin ;
 		}
 	}
 	window.onresize = Window_OnResize ;