$(document).ready(function(){
  // 偶数行にのみクラスを指定
  $('.date:even').addClass('datebg');
  $('.date:odd').addClass('datebg2');
  $('dl.zebra:odd').addClass('commentzebra');
  $('dl.trackzebra:odd').addClass('commentzebra');
  
});

$(function(){
   var currentstyle = readCookie('fontStyle');
   if (currentstyle){
   switchFont(currentstyle);
   };
   $("a.sizeL").click(function(){
   switchFont("fontL");
   return false;
   });
   $("a.sizeM").click(function(){
   switchFont("fontM");
   return false;
   });
   $("a.sizeS").click(function(){
   switchFont("fontS");
   return false;
  });
});
function switchFont(className){
   $("body").removeAttr("class").addClass(className);
   createCookie('fontStyle', className, 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=/";
}