//验证码变换
function newgdcode(obj,url)
{
    obj.src = url + '?nowtime=' + new Date().getTime();
    //后面传递一个随机参数，否则在IE7和火狐下，不刷新图片
}

//首页广告
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
//显示产品大图。图层
function showBigImg(proName) {
  dialog(proName,"id:textimg","500px","auto","id");
}