add:   if (e.clientX < 0 || e.clientY < 0) { return; } 
context: 	mouseMove: function(e) {		e = Wicket.Drag.fixEvent(e);		var o = Wicket.Drag.current;		if (o != null) {					var deltaX = e.clientX - o.lastMouseX;			var deltaY = e.clientY - o.lastMouseY;							var res = o.onDrag(o, deltaX, deltaY);						if (res == null)				res = [0, 0];						o.lastMouseX = e.clientX + res[0];			o.lastMouseY = e.clientY + res[1];		}				return false;	},
meta: 1204	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1204/054ddcc6f9be31a3b8b32d1b34c4a59f1d0d1d68/modal.js/buggy/wicket-extensions/src/java/wicket/extensions/ajax/markup/html/modal/res/modal.js