$(document).ready(function(){
     $("blockquote").each(function(){
          var title = $(this).attr("title");
          var cite = $(this).attr("cite");
 
          if (cite == null && title != null) {
              $(this).append("<cite class='source'>"+title+"</cite>");
          }
 
          else if (cite != null && title == null) {
               $(this).append("<cite class='source'><a href='"+cite+"' title='"+cite+"'>"+cite+"</a></cite>");
          }
 
          else if (cite != null && title != null) {
               $(this).append("<cite class='source'><a href='"+cite+"' title='"+title+"'>"+title+"</a></cite>");
          }
 
          else {
          }
     });
});