function validate(contact_form) {

    if (contact_form.contact_name.value == "")
    {
        alert("Please enter your contact name.")
        contact_form.contact_name.focus()
        return false
    }
	if (contact_form.Phone.value == "")
    {
        alert("Please enter your phone number.")
        contact_form.Phone.focus()
        return false
    }
	if (contact_form.email_address.value == "")
    {
        alert("Please enter your email address.")
        contact_form.email_address.focus()
        return false
    }
	else {
		return true
	}
}