function rollOver(rl) {
		if (document.getElementById) {
			document.getElementById(rl).style.visibility="visible";
		} else {
			if (document.layers) { 
				document.layers[rl].visibility='show';	
			} else { 
				document.all[rl].style.visibility='visible';
			}
		}
return true;
}
function rollOff(ro) {
		if (document.getElementById) {
			document.getElementById(ro).style.visibility="hidden";
		} else {
			if (document.layers) { 
				document.layers[ro].visibility='hide';	
			} else { 
				document.all[ro].style.visibility='hidden';
			}
		}
return true;
}