/*
 * jqswitch.js - jQuery method for style switch
 * Version: 1.0
 * Copyright (c) 2007 A.Kawashima
 * Licensed under the MIT License:
 * http://www.lllcolor.com
 */

$(function(){
  $('#textsize ul li a').click( function() {
    switchstyle($(this).attr("rel"));
    return false;
  });

  var currentstyle = readCookie('cssstyle');
  if (currentstyle){
    switchstyle(currentstyle);
  } else {
    $('#normal > a').addClass("on");
  };
});

function switchstyle(styleName){
  $('#textsize ul li a').removeClass("on");
  $('#textsize ul li a[rel=' + styleName + ']').addClass("on");
  switch (styleName) {
    case 'huge':
      $('body').css('font-size', '16px');
      break;
    case 'large':
      $('body').css('font-size', '14px');
      break;
    case 'normal':
    default:
      $('body').css('font-size', '12px');
      break;
  }
  createCookie('cssstyle', styleName, 365);
}

// cookie script http://www.quirksmode.org/js/cookies.html
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;
}