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;