var TimeOut         = 300;
var currentLayer    = null;
var currentitem     = null;
var currentLayerNum = 0;
var noClose         = 0;
var closeTimer      = null;

function mopen(n) {
var l  = document.getElementById("menu"+n);
var mm = document.getElementById("mmenu"+n);

	if(l) {
	mcancelclosetime();
	l.style.visibility='visible';
	if(currentLayer && (currentLayerNum != n))
		currentLayer.style.visibility='hidden';
	currentLayer = l;
	currentitem = mm;
	currentLayerNum = n;
	} else if(currentLayer) {
	currentLayer.style.visibility='hidden';
	currentLayerNum = 0;
	currentitem = null;
	currentLayer = null;
	}
}

function mclosetime() {
	closeTimer = window.setTimeout(mclose, TimeOut);
}

function mcancelclosetime() {
	if(closeTimer) {
		window.clearTimeout(closeTimer);
		closeTimer = null;
	}
}

function mclose() {
	if(currentLayer && noClose!=1)   {
	currentLayer.style.visibility='hidden';
	currentLayerNum = 0;
	currentLayer = null;
	currentitem = null;
	} else {
		noClose = 0;
	}
	currentLayer = null;
	currentitem = null;
}

document.onclick = mclose;