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 TopNavmopen(n) {
    var l = document.getElementById("TopNavmenu" + n);
    var mm = document.getElementById("TopNavmmenu" + 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;