rem: if (!this.mouse.now.x || !this.mouse.now.y) return false; 
add: if (!$chk(this.mouse.now.x) || !$chk(this.mouse.now.y)) return false; 
context: 	checkAgainst: function(el){		if (!this.mouse.now.x || !this.mouse.now.y) return false;		el = el.getPosition();		return (this.mouse.now.x > el.left && this.mouse.now.x < el.right && this.mouse.now.y < el.bottom && this.mouse.now.y > el.top);	},
meta: 7052	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7052/3f9c8a516c431c944f82903c38876636622e28e8/Drag.Move.js/buggy/Drag/Drag.Move.js