function chgimg(obj,imgf){
	if(document.all){
		evtype = event.type;
		if(evtype == "mouseover"){
			document.images[obj].src = imgf;
		}
		else if(evtype == "mouseout"){
			document.images[obj].src = imgf;
		}
	}
	else {
		document.images[obj].src = imgf;
	}
}