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;