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('area'); 
	var octsrc = document.octagon.getAttribute('src');
	var imgClass=new Array();
	for (i=0;i<imgarr.length;i++){
		if (imgarr[i].className.indexOf('domroll')!=-1){ 
			imgClass[i]=imgarr[i].className;		
			imgarr[i].onmouseover=function(){				
			document.octagon.src=this.className.match(/domroll (\S+)/)[1];
			}
			imgarr[i].onmouseout=function(){
			document.octagon.src = octsrc;
			}
		}
	}
}
domRollover();