<!--
var links = [
"http://www.pikespharmacy.com/", 
"http://www.pikespetpharmacy.com/", 
"http://www.lloydscher.com/", 
"http://www.thirdpresbyterian.com/", 
"http://www.my-pcconsultant.com/"]; 
// link addresses must correspond to image

var imgs = [
"banners/pikesbanner.jpg", 
"banners/pikespetbanner.jpg", 
"banners/scher_banner_2.gif", 
"banners/tp_banner.gif", 
"banners/pcc_banner.gif"]; 
// link images must be odd number

var img = []; // preloading array
var len = (links.length + imgs.length) / 2; // length
var timeBasis = 5; // display each banner time in seconds 
   // preload images
      for(i=0; i<imgs.length; i++){
         img[i] = new Image();
         img[i].src = imgs[i];
      }

function showAd(){
   if(len%2 == 0){
            document.write('<img src="blank.gif" alt="">');
         return false;
      }
   var rand = Math.floor(len*Math.random());

   document.write('<a href="'+links[rand]+'" target="_blank"'+'" title="Go to '+links[rand]+'" id="myAd">');
   document.write('<img src="'+img[rand].src+'" alt="Go to '+links[rand]+'" name="myAdImg"></a>');
   setInterval("updateAd()", timeBasis*1000);
}

function updateAd(){
   var r = Math.floor(len*Math.random());
      if(!document.links) return false;
         for(i=0; i<document.links.length; i++){
            if(document.links[i].id == "myAd"){
               if(document.links[i].href != links[r]){
                  document.links[i].href = links[r];
                  document.images['myAdImg'].src = img[r].src;
         } else {
               updateAd();
         }
       }
     }
}
//-->