function locate_and_focus_first_textbox() {
    for (i = 0; i < document.forms[0].elements.length; i++) {
        if ((document.forms[0].elements[i].type == 'text') || (document.forms[0].elements[i].type == 'text-box')) {
            document.forms[0].elements[i].focus();
            return;
        }
    }
}