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;
}