function initPage()
{
	var images = document.getElementsByTagName("img");
	for (var i=0; i<images.length; i++)
	{			
		if (images[i].className == "hover")  {
			images[i].onmouseover = function()
			{
			   this.src = this.src.replace(".gif", "_hover.gif");
			}
			images[i].onmouseout = function()
			{
				this.src = this.src.replace("_hover.gif", ".gif");
			}
		}
	}
}

AttachEvent(window, 'load', initPage);
//if (window.addEventListener)
//	window.addEventListener("load", initPage, false);
//else if (window.attachEvent)
//	window.attachEvent("onload", initPage);