//In "Contact" type forms, validate if the phone or email field is entered
function valCustomPhone(oSrc, args) {
    var txtPhone = document.getElementById('ctl00_cphMain_ContactForm_txtPhone');
    var txtEmail = document.getElementById('ctl00_cphMain_ContactForm_txtEmail');
    args.IsValid = (txtPhone.value != "" || txtEmail.value != "" );
}