function adArray() {
 for (i=0; i*2<adArray.arguments.length; i++) {
  this[i] = new Object();
  this[i].src = adArray.arguments[i*2];
  this[i].href = adArray.arguments[i*2+1];
 }
 this.length = i;
}
function getAdNum() {
 dat = new Date();
 dat = (dat.getTime()+"").charAt(8);
 if (dat.length == 1)
  ad_num = dat%ads.length;
 else
  ad_num = 0;
 return ad_num;
}

var ads = new adArray(
"images/banner1.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=iphone+4+ocean&search=search",
"images/banner2.jpg",
"http://www.casefun.co.uk/index.php?cPath=274",
"images/banner3.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=engraved&search=search",
"images/banner4.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=iphone+4+swirling+series&search=search",
"images/banner5.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=iphone+4+s+line&search=search",
"images/banner7.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=iphone+4+sticker&search=search",
"images/banner8.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=diablo&search=search",
"images/banner9.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=heart&search=search",
"images/banner10.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=iphone+3+real+metal+series&search=search",
"images/banner11.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=iphone+4+carbon&search=search",
"images/banner13.jpg",
"http://www.casefun.co.uk/advanced_search_result.php?keywords=explorer&search=search"
);

var ad_num = getAdNum();

document.write('<A href="'+ads[ad_num].href+'" target="_blank"><IMG SRC="'+ads[ad_num].src+'" '
+'height="250" width="721" border="0" name="adswap"></a>');

link_num = document.links.length-1;

function rotateSponsor() {
 if (document.images) {
  ad_num = (ad_num+1)%ads.length;
  document.adswap.src = ads[ad_num].src;
  document.links[link_num].href = ads[ad_num].href;
  setTimeout("rotateSponsor()",5000);
 }
}
setTimeout("rotateSponsor()",5000);