/* dropdown */

var TimeOut         = 100;
var currentLayer    = null;
var currentitem     = null;
var currentLayerNum = 0;
var noClose         = 0;
var closeTimer      = null;

function menuopen(n) {
	var sub  = document.getElementById("submenu" + n);
	var main = document.getElementById("menu" + n);

	if(sub) {
		cancelclose();
		sub.style.visibility='visible';
		if(currentLayer && (currentLayerNum != n))
		currentLayer.style.visibility='hidden';
		currentLayer = sub;
		currentitem = main;
		currentLayerNum = n;
	} else if(currentLayer) {
		currentLayer.style.visibility='hidden';
		currentLayerNum = 0;
		currentitem = null;
		currentLayer = null;
		}
}

function menuclosetime() {
	closeTimer = window.setTimeout(menuclose, TimeOut);
}

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

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