function clearSearch() {
    field_value = document.getElementById('q').value;
    if (field_value == 'Enter zip code or city.' || field_value == 'Enter zip code.') {
        document.getElementById('q').value = '';
    }
}

function fillSearch() {
    field_value = document.getElementById('q').value;
    
    if (field_value == '') {
        document.getElementById('q').value = 'Enter zip code or city.';
    }
}

function submitSearch() {
    document.search_form.submit();
    return false;
}