var cm=null;
var menuTimer = 0;
document.onclick = new Function("show(null)")
function show(m) {
	clearTimeout(menuTimer);
	if (m) {
		if (document.layers) document.layers[''+m+''].visibility = "show"
		else if (document.all) document.all[''+m+''].style.visibility = "visible"
		else if (document.getElementById) document.getElementById(''+m+'').style.visibility = "visible"
	}
	if ((m!=cm) && (cm)) {
		if (document.layers) document.layers[''+cm+''].visibility = "hide"
		else if (document.all) document.all[''+cm+''].style.visibility = "hidden"
		else if (document.getElementById) document.getElementById(''+cm+'').style.visibility = "hidden"
	}
	cm=m;
	menuTimer = setTimeout("show(null)", 5000);	
}