var rand1 = Math.floor(Math.random()*6);
   
num = rand1 + 1
if (num > 6) {num =0}
link = rand1

theLink = new Array()
theLink[0] = "http://sms.dayoo.com/"
theLink[1] = "http://bookcity.dayoo.com/books/"
theLink[2] = "http://adav.dayoo.com/"
theLink[3] = "http://bookcity.dayoo.com/"
theLink[4] = "http://jobs.dayoo.com/"
theLink[5] = "http://audio.dayoo.com/"

theSrc = new Array()
theSrc[0] = "http://www.dayoo.com/img1/smsbanner.gif"
theSrc[1] = "http://www.dayoo.com/img1/book_banner.gif"
theSrc[2] = "http://www.dayoo.com/img1/flgg_468.gif"
theSrc[3] = "http://www.dayoo.com/img1/book468.gif"
theSrc[4] = "http://www.dayoo.com/img1/job11.gif"
theSrc[5] = "http://www.dayoo.com/img1/audio468.gif"

function change ()
{
link = num
document.adimg.src=theSrc[link]
num++;
if (num > 5)
{num = 0}
setTimeout('change()',10000);
}

function gogo ()
{
window.open(theLink[link],'')
}

setTimeout('change()',10000);

document.write('<a href=# onClick=gogo()><img vspace="1" name=adimg src=' + theSrc[link] + ' alt="大洋广告" border="0"></a>');