function domRollover() {
	if (navigator.userAgent.match(/Opera (\S+)/)) {
		var operaVersion = parseInt(navigator.userAgent.match(/Opera (\S+)/)[1]);
	}
	if (!document.getElementById||operaVersion <7) return;
	var imgarr=document.getElementsByTagName('img');
	var imgPreload=new Array();
	var imgSrc=new Array();
	var imgClass=new Array();
	for (roi=0;roi<imgarr.length;roi++){
		if (imgarr[roi].className.indexOf('domroll')!=-1){
			imgSrc[roi]=imgarr[roi].getAttribute('src');
			imgClass[roi]=imgarr[roi].className;
			imgPreload[roi]=new Image();
			if (imgClass[roi].match(/domroll (\S+)/)) {
				imgPreload[roi].src = imgClass[roi].match(/domroll (\S+)/)[1]
			}
			imgarr[roi].setAttribute('xsrc', imgSrc[roi]);
			imgarr[roi].onmouseover=function(){
				this.setAttribute('src',this.className.match(/domroll (\S+)/)[1])
			}
			imgarr[roi].onmouseout=function(){
				this.setAttribute('src',this.getAttribute('xsrc'))
			}
		}
	}
}
domRollover();