var how_many_ads = 1;
var now = new Date();
var sec = now.getSeconds();
var ad = sec % how_many_ads;ad +=1;

if (ad==1) 
{
txt="洛阳信息港商务";
url="http://www.ly.ha.cn/cnc/shequ/indexsq.htm";
alt="洛阳信息港商务";
banner="http://www.ly.ha.cn/cnc/shequ/shequ.jpg";
width="460";height="60";
target="_blank";
}


document.write('<a href="'+ url +'" target="'+ target +'"><img src="'+ banner +'" width="460" height="60" border="0"></a>');