function ValidateContactForm()
{
    var name = document.form1.name;
    var email = document.form1.email;
    var phone = document.form1.phone;
    var message = document.form1.message;

    if (name.value == "")
    {
        window.alert("Please enter your name.");
        name.focus();
        return false;
    }

    if (email.value == "")
    {
        window.alert("Please enter a valid e-mail address.");
        email.focus();
        return false;
    }
    if (email.value.indexOf("@", 0) < 0)
    {
        window.alert("Please enter a valid e-mail address.");
        email.focus();
        return false;
    }
    if (email.value.indexOf(".", 0) < 0)
    {
        window.alert("Please enter a valid e-mail address.");
        email.focus();
        return false;
    }

    if  (phone.value == "" || phone.value != parseInt(phone.value))
    {
        window.alert("Please enter your telephone number.");
        phone.focus();
        return false;
    }
    if (message.value == "")
    {
        window.alert("Please provide a detailed description or message.");
        message.focus();
        return false;
    }
    return true;
}