function sidebarMenuChange(pageNum){

  var titleOnNum = "img#" + pageNum;
  var titleOnSrc = "http://johnbon.jp/wp-content/themes/johnbon/img/common/s_title_" +pageNum + "_on.jpg";


  changeTitle(titleOnNum,titleOnSrc);

    function changeTitle(Num1,Num2){

     //alert(Num1);
     // alert(Num2);

      $(Num1).attr("src",Num2);
    }

}