$(document).ready(function(){
  var URL=document.URL;
  var URLen = URL.replace("org/", "org/en/"); 
  var URLjp = URL.replace("org/en/" , "org/");
  $("#lang_en a").attr({ 
      href: URLen
   });
   
   $("#lang_jp a").attr({ 
      href: URL
   });
   
   $(".en #lang_en a").attr({ 
      href: URL
   });
   
   $(".en #lang_jp a").attr({ 
      href: URLjp
   });
  
});