// Copyright 2006-2007 javascript-array.com
	  var timeout= 300;
	  var closetimer= 0;
	  var ddmenuitem= 0;

	  // open hidden layer
	  function mopen(id)
	  {
	    // cancel close timer
	    mcancelclosetime();
	  
	    // close old layer
	    if(ddmenuitem) ddmenuitem.style.display = 'none';
	  
	    // get new layer and show it
	    ddmenuitem = document.getElementById(id);
	    ddmenuitem.style.display = 'block';
	  }

	  // close showed layer
	  function mclose()
	  {
 	    if(ddmenuitem) ddmenuitem.style.display = 'none';
	  }
	  
	  // go close timer
	  function mclosetime()
	  {
	    closetimer = window.setTimeout(mclose, timeout);
	  }

	  // cancel close timer
	  function mcancelclosetime()
	  {
	    if(closetimer)
	      {
	        window.clearTimeout(closetimer);
	        closetimer = null;
	      }
	  }

	  // close layer when click-out
	  document.onclick = mclose;