/*
 * jqswitch.js - jQuery method for style switch
 * Version: 1.0
 * Copyright © 2007 A.Kawashima
 * Licensed under the MIT License:
 * http://www.lllcolor.com
 */
 
 var siteURL = "/blog/"; 

$(function(){
   var currentstyle = readCookie('fontStyle');
   if (currentstyle){
   switchFont(currentstyle);
   };
   $("li.sizeL").click(function(){
   switchFont("fontL");
   return false;
   });
   $("li.sizeM").click(function(){
   switchFont("fontM");
   return false;
   });
   $("li.sizeS").click(function(){
   switchFont("fontS");
   return false;
  });
});
function switchFont(className){
   var imgS = document.getElementById("smallBtn");
   var imgS_src = siteURL + "common/images/img_font_s.gif";
   var imgSon_src = siteURL + "common/images/img_font_s_on.gif";
   var imgM = document.getElementById("mediumBtn");
   var imgM_src = siteURL + "common/images/img_font_m.gif";
   var imgMon_src = siteURL + "common/images/img_font_m_on.gif";
   var imgL = document.getElementById("largeBtn");
   var imgL_src = siteURL + "common/images/img_font_l.gif";
   var imgLon_src = siteURL + "common/images/img_font_l_on.gif";
   if(className == "fontS"){
      imgS.className = "";
      imgS.src = imgSon_src;
      imgM.className = "swap";
      imgM.src = imgM_src;
      imgL.className = "swap";
      imgL.src = imgL_src;
   }
   if(className == "fontM"){
      imgS.src = imgS_src;
      imgS.className = "swap";
      imgM.src = imgMon_src;
      imgM.className = "";
      imgL.src = imgL_src;
      imgL.className = "swap";
   }
   if(className == "fontL"){
      imgS.src = imgS_src;
      imgS.className = "swap";
      imgM.src = imgM_src;
      imgM.className = "swap";
      imgL.src = imgLon_src;
      imgL.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=/";
}
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;
}