// Rollover JavaScript Document

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 == 'roll-img') {
  var src = aImages[i].getAttribute('src');
  var ftype = src.substring(src.lastIndexOf('.'), src.length);
  var hsrc = src.replace(ftype, '-over'+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('-over'+ftype, ftype);
   this.setAttribute('src', sTempSrc);
  }
 }
}
}

window.onload = initRollovers;