function checkform ( form )
{
  
  // ** START **
  if (form.firstname.value == "") {
    alert( "Please enter your name." );
    form.firstname.focus();
    return false ;
  }
  else
  if (form.lastname.value == "") {
    alert( "Please enter your name." );
    form.lastname.focus();
    return false ;
  }
  else
  if (form.city.value == "") {
    alert( "Please enter your location." );
    form.city.focus();
    return false ;
  }
    else
  if (form.zip.value == "") {
    alert( "Please enter your zip code." );
    form.zip.focus();
    return false ;
  }
    else
  if (form.country.value == "") {
    alert( "Please enter your country." );
    form.country.focus();
    return false ;
  }
    else
  if (form.phone.value == "") {
    alert( "Please enter your phonenumber." );
    form.phone.focus();
    return false ;
  }
    else
  if (form.email.value == "") {
    alert( "Please enter your email address." );
    form.email.focus();
    return false ;
  }
if (form.comments.value == "") {
    alert( "Please enter your questions." );
    form.comments.focus();
    return false ;
  }

  return true ;
}