function submitenter(myfield,e)
{
var keycode;
if (window.event) keycode = window.event.keyCode;
else if (e) keycode = e.which;
else return true;

if (keycode == 13)
   {
	   if(check_login()){
		  myfield.form.submit();
		  return false;
	   }
   }
else
   return true;
}
//-->