function setCookie(value, name)
{
var exdate=new Date();
var expiredays = 1;
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=name+"=" +escape(value)+((expiredays==null) ? "" : "; expires="+exdate.toGMTString());
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1;
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    }
  }
return "";
}

function eraseCookie(name) {
	$('#gallery_menu').slideUp(); 
	setCookie('down');
}


function start(){
	if(getCookie('gallery') != 'down'){
		$('#gallery_menu').slideUp(); 
		setCookie('up', 'gallery');
	}
    if(getCookie('materials') != 'down'){
		$('#materials_menu').slideUp(); 
		setCookie('up', 'materials');
	}
}
 $('#gallery').click(function () {
var ccc = getCookie('gallery');
		if(ccc == 'down'){
			$('#gallery_menu').slideUp(); 
			setCookie('up', 'gallery');
			return null;
	  }
	  if(ccc == 'up'){
		$('#gallery_menu').slideDown(); 
			setCookie('down', 'gallery');
			return null;
	  }
});

$('#materials').click(function () {  
 var ddd = getCookie('materials');
		if(ddd == 'down'){
			$('#materials_menu').slideUp(); 
			setCookie('up', 'materials');
			return null;
	  }
	  if(ddd == 'up'){
		$('#materials_menu').slideDown(); 
			setCookie('down', 'materials');
			return null;
	  }     
      
});
start();