/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Created by: Konstantin Jagello | http://javascript-array.com/ */

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) {
	//メインメニューのhoerから抜けるため背景位置を再調整//
	//メニューをロールオーバー////////////
	mm.style.backgroundPosition = 'top';
	//////////////////////////////////////
	
    mcancelclosetime(n);
    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(n) {  

	closeTimer = window.setTimeout(mclose, TimeOut);
  	//メインメニューをもとに戻す/////////////////
 	 var mm = document.getElementById("mmenu"+ n);
	mm.style.backgroundPosition = '0px -31px';
	/////////////////////////////////////////////
}

function mcancelclosetime(n) {
  	//サブメニュー表示中はメインメニューロールオーバー///
 	 var mm = document.getElementById("mmenu"+ n);
		mm.style.backgroundPosition = 'top';
	/////////////////////////////////////////////////////
  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;