一个来自网上的东西- -被我捡到了

然后我访问到了 发出来就可以粘贴复制自己做成js文件了吧

// by zhangxinxu welcome to visit my personal website http://www.zhangxinxu.com/// zxx.drag v1.0 2010-03-23 元素的拖拽实现var params = {    left: 0,    top: 0,    currentX: 0,    currentY: 0,    flag: false};//获取相关CSS属性var getCss = function(o,key){    return o.currentStyle? o.currentStyle[key] : document.defaultView.getComputedStyle(o,false)[key];     };//拖拽的实现var startDrag = function(bar, target, callback){    if(getCss(target, "left") !== "auto"){        params.left = getCss(target, "left");    }    if(getCss(target, "top") !== "auto"){        params.top = getCss(target, "top");    }    //o是移动对象    bar.onmousedown = function(event){        params.flag = true;        if(!event){            event = window.event;            //防止IE文字选中            bar.onselectstart = function(){                return false;            }          }        var e = event;        params.currentX = e.clientX;        params.currentY = e.clientY;    };    document.onmouseup = function(){        params.flag = false;            if(getCss(target, "left") !== "auto"){            params.left = getCss(target, "left");        }        if(getCss(target, "top") !== "auto"){            params.top = getCss(target, "top");        }    };    document.onmousemove = function(event){        var e = event ? event: window.event;        if(params.flag){            var nowX = e.clientX, nowY = e.clientY;            var disX = nowX - params.currentX, disY = nowY - params.currentY;            target.style.left = parseInt(params.left) + disX + "px";            target.style.top = parseInt(params.top) + disY + "px";        }                if (typeof callback == "function") {            callback(parseInt(params.left) + disX, parseInt(params.top) + disY);        }    }    };

上面那个是js的文件！！！！接下来才是界面代码。。。。

  
       
     
    
      
        
       
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界面端有个引用的网络js名字。。。。也可以直接用。。。。。