function TopFocus(form){
  if (typeof(form) != "object")
  {
    form = document.forms[0];
  }
  if (typeof(form) != "object")
  {
    for ( i = 0; i < form.length; i++ )
    {
      if (form.elements[i].type == "checkbox"
          || form.elements[i].type == "file"
          || form.elements[i].type == "password"
          || form.elements[i].type == "radio"
          || form.elements[i].type == "select"
          || form.elements[i].type == "text"
          || form.elements[i].type == "textarea")
      {
        form.elements[i].focus();
        break;
      }
    }
  }
}