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

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 checkCookie(c_name) {
  return (getCookie(c_name)!=null && getCookie(c_name)!="");
}

if (!checkCookie('lamer_email')) {
  setCookie('lamer_email', 'set', '30');
} else {
  var value = getCookie('lamer_email');

  if (value == "set") {
    Event.observe(window, 'load', function(){
      if ($('gnav_signupemail_menu') == null)
        return;
      
      $('gnav_signupemail_menu').setStyle({
        visibility: 'visible'
      });
      
      setTimeout(hideSignup, 10000);
      
      setCookie('lamer_email', 'done', '30');
    });
  }
}

function hideSignup() {
  $('gnav_signupemail_menu').setStyle({
    'visibility': 'hidden'
  });
}