.hide_box{z-index:999;filter:alpha(opacity=50);background:#666;opacity: 0.5;-moz-opacity: 0.5;left:0;top:0;height:99%;width:100%;position:fixed;}
.shang_box{width:800px;height:550px;padding:3px;text-align:center; background-color:#E8FFFF;border-radius:0px;position:fixed;z-index:1000;left:50%;top:50%;margin-left:-280px;margin-top:-280px;border:1px dotted #dedede;}
.shang_box img{border:none;border-width:0;}