/*
  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].onmouseup = function() {
        if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
        this.setAttribute('src', sTempSrc);
      }
      
      aImages[i].onmouseout = function() {
        if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
        this.setAttribute('src', sTempSrc);
      }
    }
  }
}

try{
  window.addEventListener("load",initRollovers,false);
}catch(e){
  window.attachEvent("onload",initRollovers);
}