function createCookie(name,value,days) {
		if (days) {
			var date = new Date();
			date.setTime(date.getTime()+(days*24*60*60*1000));
			var expires = "; expires="+date.toGMTString();
		}
		else var expires = "";
		document.cookie = name+"="+value+expires+"; path=/";
	}
	
	function readCookie(name) {
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');
		for(var i=0;i < ca.length;i++) {
			var c = ca[i];
			while (c.charAt(0)==' ') c = c.substring(1,c.length);
			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
		}
		return null;
	}

	
	function mnu_collaptor(elemID)
	{
		var elemID = 'mnu_n'+elemID;
		state = document.getElementById(elemID).style.display;
		if('none'==state|| ''==state)
		{
			document.getElementById(elemID).style.display='block';
			createCookie(elemID,1);
		}
		else
		{
			document.getElementById(elemID).style.display='none';
			createCookie(elemID,0);
		}
	}
	
	function mnu_restorestate()
	{
		for(var i=0; i<document.cookie.length; i++)
			if (1==readCookie('mnu_n'+i))
				document.getElementById('mnu_n'+i).style.display='block';
	}