function checkform ( form )
{

  // ** START **



// If you have drop-down elements in your forms, you should include the first option as an empty field 
// (e.g. <option value="">choose one</option>) You can include any text you would like on the field, as long as the value is blank.

 if (form.sector.options[0].selected != ""){
    alert( "Please select your business sector." );
    form.sector.focus();
    return false ;
  }









  // ** END **
  return true ;
}