var now=new Date();//获取当前时间
//var now="2010-3-31";
var now=now.getFullYear() + "-" + (now.getMonth()+1) + "-" + now.getDate();
var end="2010-8-31";//设置过期时间（有效期的最后一天）
nowArr=now.split('-');
endArr=end.split('-');
var flag=false;
if(parseInt(nowArr[0]) < parseInt(endArr[0])){ flag=true;}
else if(parseInt(nowArr[0]) == parseInt(endArr[0])){
    if(parseInt(nowArr[1]) < parseInt(endArr[1])){ flag=true;}
    else if(parseInt(nowArr[1]) == parseInt(endArr[1]))
    {
        if(parseInt(nowArr[2]) < parseInt(endArr[2])){ flag=true;}
        else if(parseInt(nowArr[2]) == parseInt(endArr[2]))
        { flag=true;}
    }
}

if(flag){//不过期
    //加广告时效果（顶部广告图片）
    document.write("<style type=\"text/css\">#imgBox img {display:block}#imgBox li{position:relative;list-style-type:none;float:left}.toolbar{position:absolute;bottom:18px; right:0px;}</style><ul id=\"imgBox\"><li><a href=\"http://www.chinayq.com/huodong/8yueyouhui/\" target=\"_blank\"><img src=\"/TopAd/8yueyouhui.jpg\" /></a><div class=\"toolbar\"><a href=\"javascript:void(0);\"  onclick=\"javascript:document.getElementById('imgBox').style.display='none';\"><img src=\"/TopAd/close.gif\" alt=\"关闭\"></a></div></li></ul>");
}

//新年时效果（背景+顶部广告图片）
//function showyearbg(act){ 
//    if(act == 1) document.body.style.background = "#fff url(Images/newyear/xn-bg.jpg) repeat-x";
//    else{ document.body.style.background = "";document.getElementById("imgBox").style.display = "none";}}
//showyearbg(1);
//document.write("<style type=\"text/css\">#imgBox img {display:block}#imgBox li{position:relative;list-style-type:none;float:left;}.toolbar{position:absolute;bottom:0px;left:933px; right:0px;}</style><ul id=\"imgBox\"><li><img src=\"/images/newyear/xn-top.jpg\" /><div class=\"toolbar\"><a href=\"javascript:void(0);\" onclick=\"showyearbg(0)\"><img src=\"/TopAd/close2.gif\" alt=\"关闭\"></a></div></li></ul>");