/* img rollover: assumes...
	all off-state img suffix "_0"
	all on-state img suffix "_1"
	all current-state img suffix "_2"
*/
function imgR(n,s) {
	if (!document.images) return;
	oImg = eval(document.images[n]);
	if (s==1) {
		oImg.src = oImg.src.replace(/_0\./, "_1.");
	} else {
		oImg.src = oImg.src.replace(/_1\./, "_0.");
	}
}