自己優化修改了網上的一個JS拖動類，增加了拖動時顯示半透明的特效。 //m.survivalescaperooms.com/article/16122.htm
注意，本文類中的Cminfo類請 查看：
//m.survivalescaperooms.com/article/18760.htm

代碼如下:
//*********************************移動層 函數 開始*******************************************
//生成拖動層很簡單,只需要(參數之一如果是數組表示局部拖動,arr[0]表示拖動層,arr[1]表示整體)
//new divDrag(['test'], [getObject('test31'),getObject('test3')], getObject('test1') ,getObject('test2') ,[getObject('test41'),getObject('test4')]);
//記得有拖動屬性的層position:absolute;
Array.prototype.extend = function(C){for(var B=0,A=C.length;B<A;B++){this.push(C[B]);}return this;}
function divDrag()
{
    var A,B,gCn;
    var zIndex = 1;
    this.dragStart = function(e)
    {
        e = e||window.event;
        if((e.which && (e.which!=1))||(e.button && (e.button!=1))){return;}
        var pos = this.gPos;
        gCn = this.parent||this;
        if(document.defaultView)
        {
            _top = document.defaultView.getComputedStyle(gCn,null).getPropertyValue("top");
            _left = document.defaultView.getComputedStyle(gCn,null).getPropertyValue("left");
        }
        else
        {
            if(gCn.currentStyle)
            {
                _top = gCn.currentStyle["top"];
                _left = gCn.currentStyle["left"];
            }
        }
        pos.ox = (e.pageX||(e.clientX+document.documentElement.scrollLeft))-parseInt(_left);
        pos.oy = (e.pageY||(e.clientY+document.documentElement.scrollTop))-parseInt(_top);
        if(!!A)
        {
            if(document.removeEventListener)
            {