document.write("<div id='TopHeadAd' style='margin:0 auto;width:1044px;height:0px;overflow:hidden;'><div style='margin:0 auto;width:1024px;background-color:#fff;text-align:center;'><img src='http://www.qjtrip.com/images/GuangGaoPic/TopAd_2012_1.jpg' style='border:0px;width:1024px;' onload=setTimeout('expendTopHeadAd()',20000); /></div></div>"); 

var TopHeadAdHeight = 0; 
function expendTopHeadAd() 
{ 
    TopHeadAdHeight = TopHeadAdHeight + 10;   
    document.getElementById("TopHeadAd").style.height = TopHeadAdHeight + "px"; 
    if (TopHeadAdHeight<600)
    {
	    setTimeout("expendTopHeadAd()", 40); 
    }
    else{setTimeout("CloseTopHeadAd()", 5000); }
}
function CloseTopHeadAd()
{
	TopHeadAdHeight = TopHeadAdHeight - 10; 
    if (TopHeadAdHeight <= 0) { 
    document.getElementById("TopHeadAd").style.display = "none"; 
    return; 
    } 
    else
    {
        document.getElementById("TopHeadAd").style.height = TopHeadAdHeight + "px";     
	    setTimeout("CloseTopHeadAd()", 40); 
	 }
    
	//document.getElementById("TopHeadAd").style.display = "none"; 
}
setTimeout("expendTopHeadAd()",2000);