function validateForm() {
    ret = true;
    validate = {
        email : /.+/
    }
    
    for (i in validate) {
        el = document.getElementById(i);

        if (validate[i].test(el.value)) {
            el.style.backgroundColor = "#ffffff";
        } else {
            el.style.backgroundColor = "#e29494";
            ret = false;
        }
    }

    return ret;
}