function SetupHoverImages()
{
	$$('img').each(function(i){
		if(i.hasAttribute('hover'))
		{
			var image=document.createElement('img');
			image.src=i.getAttribute('hover');
			i.setAttribute('normal',i.src);
			i.onmouseover=function(){
				i.src=i.getAttribute('hover');
			}
			i.onmouseout=function(){
				i.src=i.getAttribute('normal');
			}
		}
	});
}