JS鼠标点击不放 窗口移动功能

//窗口随意移动
function window_move(object){
    $(object).mousedown(function(){
        var event=window.event||arguments.callee.caller.arguments[0];
        var left=event.clientX;
        var top=event.clientY;
        $(document).mousemove(function(){
            var event=window.event||arguments.callee.caller.arguments[0];
            var moveleft=parseInt($(object).css('left'))+(event.clientX-left);
            var movetop=parseInt($(object).css('top'))+(event.clientY-top);
            left=event.clientX;top=event.clientY;//重置新坐标位置
            $(object).css({left:moveleft+"px",top:movetop+"px"});
        });
    })

    $(document).mouseup(function(){
        $(document).off('mousemove');
    })
}

使用的话把需要移动的窗口最外层对象传给他

window_move(object)

需要用到juqery