<!--
function checkwaardering ( form )
{

  // ** START **
  if (form.ambiance.value == "") {
    alert( "Please grade ambiance" );
    form.ambiance.focus();
    return false ;
  }
    if (form.service.value == "") {
    alert( "Please grade service" );
    form.service.focus();
    return false ;
  }
    if (form.culinair.value == "") {
    alert( "Please grade culinair" );
    form.culinair.focus();
    return false ;
  }
    if (form.drinks.value == "") {
    alert( "Please grade drinks" );
    form.drinks.focus();
    return false ;
  }
    if (form.food_presentation.value == "") {
    alert( "Please grade food presentation" );
    form.food_presentation.focus();
    return false ;
  }
    if (form.extras.value == "") {
    alert( "Please grade extras" );
    form.extras.focus();
    return false ;
  }
    if (form.ambiance.value < 1 ||form.ambiance.value > 6||form.service.value < 1 ||form.service.value > 6||form.culinair.value < 1 ||form.culinair.value > 6||form.drinks.value < 1 ||form.drinks.value > 6||form.food_presentation.value < 1 ||form.food_presentation.value > 6||form.extras.value < 1 ||form.extras.value > 6) {
    alert( "The correct possible grades are 1 to 6" );
    form.ambiance.focus();
    return false ;
  }
    if (form.captcha.value == "") {
    alert( "Please enter the captcha code" );
    form.captcha.focus();
    return false ;
  }
  // ** END **
  return true ;
}
//-->