theLink = new Array()
theLink[0] = "http://bookcity.dayoo.com/books/book.asp?bookID=351348"
theLink[1] = "http://log.baidu.com/ads/click.php?id=58"
theLink[2] = "http://audio.dayoo.com/"
theLink[3] = "http://www.dayoo.com/adv/spiderman/index.html"

theSrc = new Array()
theSrc[0] = "http://www.dayoo.com/img1/card468.gif"
theSrc[1] = "http://www.dayoo.com/img1/baidu468.gif"
theSrc[2] = "http://www.dayoo.com/img1/audio468.gif"
theSrc[3] = "http://www.dayoo.com/img1/game468.gif"

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

function change ()
{
link = num
document.adimg.src=theSrc[link]
num++;
if (num > LinksAmount-1)
{num = 0}
setTimeout('change()',10000);
}

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

setTimeout('change()',10000);

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