How does DreamWeaver add image download function to the new album page?

if(sina.isIE){ this.ImgObj1.src = 'http://i0.sinaimg.cn/dy/deco/2008/0331/yocc080331img/news_mj_005.gif'; this.ImgObj1.filters[0].Apply(); this.ImgObj1.src = this.filmstrips[num].src; this.ImgObj1.filters[0].Play(); }else{ this.ImgObj1.src = this.filmstrips[num].src; for(i = 0;i <= 3;i ++){ this._timeOut[i] = setTimeout("epidiascope.ImgObj1.style.opacity = " + i * 0.3,i * 100); }; this._timeOut[i] = setTimeout("epidiascope.ImgObj1.style.opacity = 1;",4 * 100); };

document.all.imgsrcs.href=(this.ImgObj1.src);