function toggle_drawer(id,ti) {
       var contentDisp = document.getElementById(id);
       if(contentDisp.style.display == 'block') {
          contentDisp.style.display = 'none';
          document.getElementById(ti).src = 'http://www.sybase.com/image/Buttons/Icon_ArrowMinimize.gif';
       } else {
          contentDisp.style.display = 'block';   
          document.getElementById(ti).src = 'http://www.sybase.com/image/Buttons/Icon_ArrowMaximize.gif';
            }    
      }