var DHTML = (document.getElementById || document.all || document.layers); 
      function ap_getObj(name) { 
         if (document.getElementById) { 
          return document.getElementById(name).style; } 
         else if (document.all) { 
         return document.all[name].style; } 
         else if (document.layers) { 
         return document.layers[name]; } 
                              } 
     function ap_showWaitMessage(Div,flag) { 
        if (!DHTML) return; 
        var x = ap_getObj(Div); 
        x.visibility = (flag) ? 'visible':'hidden' 
        if(! document.getElementById) 
        if(document.layers) 
        x.left=280/2; 
     return true; }