var TimeOut         = 300;
var currentLayer    = null;
var currentitem     = null;
var currentLayerNum = 0;
var noClose         = 0;
var closeTimer      = 0;

function mopen(n) {




  var l	= document.getElementById("sub-menu"+n);
  var n	= document.getElementById("main-menu"+n);
	
  if(l) {
    timeCC();
    l.style.visibility='visible';
    
	if(currentLayer && (currentLayerNum != n))
      currentLayer.style.visibility='hidden';
	  currentLayer = l;
	  currentitem = n;
	  currentLayerNum = n;
	}else if(currentLayer){
	  currentLayer.style.visibility='hidden';
	  currentLayerNum = 0;
	  currentitem = null;
	  currentLayer = null;
	}
  }




// settimer for closing menu
function timeClose(){
  closeTimer = window.setTimeout(menuClose, TimeOut);
}


// time for canceling and closing menu
function timeCC(){
  if(closeTimer){
    window.clearTimeout(closeTimer);
    closeTimer = null;
  }
}


// closing menu
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;