Index: branches/RC/core/kernel/utility/debugger/debugger.js
===================================================================
diff -u -r9359 -r9389
--- branches/RC/core/kernel/utility/debugger/debugger.js	(.../debugger.js)	(revision 9359)
+++ branches/RC/core/kernel/utility/debugger/debugger.js	(.../debugger.js)	(revision 9389)
@@ -381,9 +381,9 @@
 	var the_debugger = this;
 	this.AddEvent(drag_object, 'mousedown', function(ev){
 		ev = ev || window.event;
-		the_debugger.InitialPos = findPos(drag_object);
+		the_debugger.InitialPos = dbg_findPos(drag_object);
 		var coords = the_debugger.mouseCoords(ev);
-		var pos = findPos(drag_object);
+		var pos = dbg_findPos(drag_object);
 		the_debugger.MouseOffset = [coords.x - pos[0], coords.y - pos[1]];
 		the_debugger.DragObject = drag_object;
 		the_debugger.LastDragObject = drag_object;
@@ -412,6 +412,19 @@
 		if(tmp){
 			endCallback(tmp);
 		}
-		var pos = findPos(drag_object);
+		var pos = dbg_findPos(drag_object);
 	});
+}
+
+function dbg_findPos(obj) {
+	var curleft = curtop = 0;
+	if (obj.offsetParent) {
+		curleft = obj.offsetLeft
+		curtop = obj.offsetTop
+		while (obj = obj.offsetParent) {
+			curleft += obj.offsetLeft
+			curtop += obj.offsetTop
+		}
+	}
+	return [curleft,curtop];
 }
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