function disable_enter(stuff){
 document.onkeypress = kH;
 if (document.stuff) document.captureEvents(Event.KEYPRESS);
 
}
// disable the enter 
function kH(e) {
  var pK = e ? e.which : window.event.keyCode;
  return pK != 13;
}

document.onkeypress = kH;
if (document.layers) document.captureEvents(Event.KEYPRESS);