function MouseEvent(e){
	e = window.event || e;
	this.x = e.pageX || e.clientX;
	this.y = e.pageY || e.clientY;
	this.offsetX = e.offsetX || e.layerX;
	this.offsetY = e.offsetY || e.layerY;
	this.target = e.target || e.srcElement;
}