function validate_required(field, alerttxt) {
    with (field) {
        if (value == null || value == "")
        { alert(alerttxt); return false; }
        else { return true } 
    } 
}
function validate_form(thisform) {
    with (thisform) {
        if (validate_required(q, "Sorry, we can't find what you need if you don't enter any search words!  Please type your search words in the search box above before clicking the Search button and we'll try this again.") == false)
        { q.focus(); return false; } 
    } 
}