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;