// JScript 文件

var speed=30;

var obRollingAd=gid("RollingAd");
var obRollingAd1=gid("RollingAd1");
var obRollingAd2=gid("RollingAd2");

function initialAd() //初始化
{
    var totalHeight=obRollingAd.offsetHeight*2-obRollingAd1.offsetHeight;
    if(totalHeight>0){
        var howManyAd=Math.round(totalHeight/obRollingAd1.offsetHeight);
        for(var i=0;i<howManyAd;i++)
        {
            obRollingAd2.innerHTML+=obRollingAd1.innerHTML;
        }
    }
    else
    {
        obRollingAd2.innerHTML=obRollingAd1.innerHTML;
    }
   
}

function MarqueeAd(){ 
    if(obRollingAd.scrollTop-obRollingAd1.offsetHeight>=0)
    {
        obRollingAd.scrollTop-=obRollingAd1.offsetHeight;
    }
    obRollingAd.scrollTop++;
} 

//如果有广告内容的话
if(obRollingAd1.offsetHeight>4){
    var MyMar=setInterval(MarqueeAd,speed);
    obRollingAd.onmouseover=function() {clearInterval(MyMar);} 
    obRollingAd.onmouseout=function() {MyMar=setInterval(MarqueeAd,speed);} 

    if (document.getElementsByTagName) { // if we're DOM capable
	    initialAd();  //start _trying_ to define menus
	}
}

//function aaa(){ 
//alert(obRollingAd.scrollTop+'---'+obRollingAd1.offsetHeight+'---'+obRollingAd2.offsetHeight+"---"+obRollingAd.offsetHeight+"-AdscrollHeight-"+obRollingAd.scrollHeight);
//}
//var tt=setInterval(aaa,3000);