ÿþ function changemenu(num) {

       for (var i = 1; i <= 6; i++) {

            document.getElementById('menu' + i.toString()).className = "nomenu";

           document.getElementById('right' + i.toString()).style.display= "none";

          // document.getElementById('leftimg' + i.toString()).style.display= "none";

        }

        document.getElementById('menu' + num).className = "yesmenu";

      document.getElementById('right' +num).style.display= "block";

     // document.getElementById('leftimg' +num).style.display= "block";

       

    }