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;