function fnTrapKD(btn, event){

 if (document.all){

  if (event.keyCode == 13){

   event.returnValue=false;

   event.cancel = true;

   btn.click();

  }

 }

 else if (document.getElementById){

  if (event.which == 13){

   event.returnValue=false;

   event.cancel = true;

   btn.click();

  }

 }

 else if(document.layers){

  if(event.which == 13){

   event.returnValue=false;

   event.cancel = true;

   btn.click();

  }

 }

}