//在setattribute.js里
        var resize = new Resize(this.content,this.cut,this._layCutImg.id);
        resize.Set("RightDown");
        //大家可以扩展resize.Set("RightUp")等，RightDown,RightUp为右上角，右下角div的id
        //然后在resize.js里
    Set:function(funCase){
        var fun;
        switch(funCase){
            case "RightDown":
                fun=this.RightDownMouseDown;
                this._obj=id(funCase);
                break;
            case "RightUp":
                fun=this.RightDownMouseUp;//该方法自行添加，这里我就没在做了。
                this._obj=id(funCase);
                break;
            //....
            default:break;
        }
        this.omove = this.bindEvent(this,this.RightDownMouseMove);
        this.oup = this.bindEvent(this,this.RightDownMouseUp);
        this.addEvent(this._obj,"mousedown",this.bindEvent(this,fun));
    },

//调用
            var setAttribute = new SetAttribute("content","cut","temp/"+fileUrl,width,height,{"CutHeight":"50px","CutWidth":"50px","CutLeft":"30px","CutTop":"30px",
                        "Opacity":"50"});
//CutHeight，CutWidth,CutLeft,CutTop,初始化切割层的高度，宽度，距离左边，上边的距离。
//要单独运行修改背景图等参数的话可以调用
setAttribute.url="xx.jpg";
setAttribute.Override();