var timeout	= 500;
var closetimer	= 0;
var d = 0;

window.onload=show;

function show(id){
	cancelhide();
	var d = document.getElementById(id);
	for (var i = 1; i<=10; i++) {
		if (document.getElementById('smenu'+i)){
			document.getElementById('smenu'+i).style.display='none';
		}
	}
	if (d) {
		d.style.display='block';
	}
}

function hide(){
	closetimer = window.setTimeout(show, timeout);
}

function cancelhide(){
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}