<!--
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, '_on'+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);
      }
    }
  }
}

window.onload = initRollovers;
//-->