js获取鼠标位置

//获取鼠标位置
function getMousePos(event) {
    var e = event || window.event;
    var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
    var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
    var x = e.pageX || e.clientX + scrollX;
    var y = e.pageY || e.clientY + scrollY;
    //alert('x: ' + x + '
y: ' + y);
    return { 'x': x, 'y': y };
}

var obj=getMousePos(event);
var Mousex=obj.x;//横坐标

var Mousey=obj.y;//纵坐标