Rotating Ad Banner

var seconds = 3;
var thisAd = 0;

var adImages = new Array(4);

if (document.images) {
     for (var i = 0; i < adImages.length; i++) {
          adImages[i] = new Image();
          adImages[i].src = "images/banner" + (i + 1) + ".gif";
     }
}

var url = new Array();

url[0] = "index.htm";
url[1] = "rollover.htm";
url[2] = "crossword.htm";
url[3] = "emailcheck.htm";

function rotate() {
     if (document.images) {
          if (document.adBanner.complete) {
               thisAd++;
               if (thisAd == adImages.length) thisAd = 0;
               document.adBanner.src = adImages[thisAd].src;
          }
          setTimeout("rotate()", seconds * 1000);
    }
}

function jumpBillboard() {
location.href = url[thisAd];
}

</SCRIPT>