/*
   Standards Compliant Rollover Script
   Author : Daniel Nolan
   http://www.bleedingego.co.uk/webdev.php
*/

function initRollovers() {
   if (!document.getElementById) return

   var aPreLoad = new Array();
   var sTempSrc;
   var aImages = document.getElementsByTagName('img');

   for (var i = 0; i < aImages.length; i++) {
      if (aImages[i].className == 'imgover') {
         var src = aImages[i].getAttribute('src');
         var ftype = src.substring(src.lastIndexOf('.'), src.length);
         var hsrc = src.replace(ftype, '_o'+ftype);

         aImages[i].setAttribute('hsrc', hsrc);

         aPreLoad[i] = new Image();
         aPreLoad[i].src = hsrc;

         aImages[i].onmouseover = function() {
            sTempSrc = this.getAttribute('src');
            this.setAttribute('src', this.getAttribute('hsrc'));
         }

         aImages[i].onmouseout = function() {
            if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
            this.setAttribute('src', sTempSrc);
         }
      }
      else if (aImages[i].className == 'mainImgOver') {
         var src = aImages[i].getAttribute('src');
         var ftype = src.substring(src.lastIndexOf('.'), src.length);
         var hsrc = src.replace(ftype, '-big'+ftype);

         aImages[i].setAttribute('hsrc', hsrc);

         aPreLoad[i] = new Image();
         aPreLoad[i].src = hsrc;

         aImages[i].onmouseover = function() {
            sTempSrc = this.getAttribute('src');
            document.getElementById("mainImage").setAttribute('src', this.getAttribute('hsrc'));
         }

         aImages[i].onmouseout = function() {
            document.getElementById("mainImage").setAttribute('src', 'images/change-image.gif');
         }
      }
   }
}

window.onload = initRollovers;