Hello, im not a very good coder and i had this code somewhere but i dont remember where so i need help.

I want to have a rotating banner system, like xenez.com. I want banners to change every 10 seconds, i thought the code to be this
<script language="JavaScript">
var imgs1 = new Array("banner1","banner2")
var lnks1 = new Array("bannerlink1","bannerlink2")
var alt1 = new Array("banneralt1","banneralt2")
var currentAd1 = 0
var imgCt1 = 5
function cycle1() {
if (currentAd1 == imgCt1) {
currentAd1 = 0
}
var banner1 = document.getElementById('adBanner1');
var link1 = document.getElementById('adLink1');
banner1.src=imgs1[currentAd1]
banner1.alt=alt1[currentAd1]
document.getElementById('adLink1').href=lnks1[currentAd1]
currentAd1++
}
window.setInterval("cycle1()",6500)
</script> but it doesnt work for me, any help would be appriciated, thanks