var cookie = function(name, value, options) {
    if (typeof value != 'undefined') { // name and value given, set cookie
        options = options || {};
        if (value === null) {
            value = '';
            options.expires = -1;
        }
        var expires = '';
        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
            var date;
            if (typeof options.expires == 'number') {
                date = new Date();
                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
            } else {
                date = options.expires;
            }
            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
        }
        // CAUTION: Needed to parenthesize options.path and options.domain
        // in the following expressions, otherwise they evaluate to undefined
        // in the packed version for some reason...
        var path = options.path ? '; path=' + (options.path) : '';
        var domain = options.domain ? '; domain=' + (options.domain) : '';
        var secure = options.secure ? '; secure' : '';
        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
    } else { // only name given, get cookie
        var cookieValue = null;
        if (document.cookie && document.cookie != '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jQuery.trim(cookies[i]);
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) == (name + '=')) {
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookieValue;
    }
};


function setFontSize(size) {
  switch(size) {
    case "s":
      $("body").css({fontSize:'80%'});
      $("#font-size-s").addClass("current");
      $("#font-size-m").removeClass("current");
      $("#font-size-l").removeClass("current");
      cookie("font-size", "s");
      break;
    case "l":
      $("body").css({fontSize:'110%'});
      $("#font-size-l").addClass("current");
      $("#font-size-m").removeClass("current");
      $("#font-size-s").removeClass("current");
      cookie("font-size", "l");
      break;
    default:
      $("body").css({fontSize:''});
      $("#font-size-m").addClass("current");
      $("#font-size-s").removeClass("current");
      $("#font-size-l").removeClass("current");
      cookie("font-size", "m");
      break;
  }
}

$(document).ready(function(){

  $("#print").click(function() {
    print();
    return false;
  });
  
  $("#font-size-s").click(function() {
    setFontSize("s");
    return false;
  });
  
  $("#font-size-m").click(function() {
    setFontSize("m");
    return false;
  });
  
  $("#font-size-l").click(function() {
    setFontSize("l");
    return false;
  });
  
  if(cookie("font-size")) {
    setFontSize(cookie("font-size"));
  }
  else {
    setFontSize("m");
  }
});