function hoverImages() 
{
  if (!document.getElementsByTagName) return;
  var images = document.getElementsByTagName("img");
  var imagesArray = new Array();
  for (var i = 0; i < images.length; i++) 
  {
    image = images[i];
    if (image.getAttribute("src") && image.getAttribute("rel") == "hover")
    {
      imagesArray[i] = image.getAttribute("src");
			image.setAttribute("srcx", imagesArray[i]);
			image.setAttribute("srcxhover", imagesArray[i].replace(/\.jpg/,"_hover.jpg"));
			image.onmouseover = function() { this.setAttribute("src", this.getAttribute("srcxhover")) }
			image.onmouseout = function() { this.setAttribute("src", this.getAttribute("srcx")) }
    }
  }
}
addLoadEvent( hoverImages);