function switchStylestyle(styleName) {
  $('link[rel*=style][title]').each(function() {
    this.disabled = true;
    if ($(this).attr('title') == styleName) {
      this.disabled = false;
    }
  });
  createCookie('style', styleName, 365);
}

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 eraseCookie(name) {
  createCookie(name, "", -1);
}