var max=3;
var thisBanner=1;
var banner=new MakeBannerArray(max);

function MakeBannerArray(n)
{
this.length=n;
for (var i=1; i<=n;i++)
{
this[i]="";
}
return this;
} 

banner[1]='<a href="./offers.php?filter=1&discount=1"><img src="./images/long-banner.jpg" border="0" alt=""><\/a>';
banner[2]='<a href="./offers.php?filter=1&discount=1"><img src="./images/long-banner1.jpg" border="0" alt=""><\/a>';
banner[3]='<a href="./offers.php?filter=1&discount=1"><img src="./images/long-banner2.jpg" border="0" alt=""><\/a>';

function rand(n)
{
  rnum=Math.floor(n*Math.random())+1;
  return rnum;
}
  
function setBanner()
{
  thisBanner=rand(max);
}