function init() {
   if(!document.getElementsByTagName) return;
   images = document.getElementsByTagName("img");
   for(i = 0; i < images.length; i++) {
      if(images[i].className == "convertToJpg") {       
         images[i].src = "indeximages/mrbodykitupperbackgroundJPG.jpg"
         images[i].convertToPath = "indeximages/mrbodykitupperbackgroundGIF.gif"
         images[i].onload = convertImages;
      }
   }
}

function convertImages() {   
   images = document.getElementsByTagName("img");
   for(i = 0; i < images.length; i++) {
      if(images[i].convertToPath != null) {
      
         if (images[i].src == "indeximages/mrbodykitupperbackgroundJPG.jpg")
            images[i].onload = function() { setTimeout("convertImages()", 1700) };
         else
            images[i].onload = function() { setTimeout("convertImages()", 5000) };
            
         tmp = images[i].src;
         images[i].src = images[i].convertToPath;
         images[i].convertToPath = tmp;
      }
   }  
}

function addEvent(obj, evType, fn, useCapture){
  if (obj.addEventListener){
    obj.addEventListener(evType, fn, useCapture);
    return true;
  } else if (obj.attachEvent){
    var r = obj.attachEvent("on"+evType, fn);
    return r;
  } else {
    alert("Handler could not be attached");
  }
}

addEvent(window, "load", init, false)