function ValidatePhone(source, arguments)
{
    var number = arguments.Value;
    if( number.length > 0)
    {
        var ajax = new AJAX("_ajax/ajax_ValidatePhone.aspx?p=" + number);
        ajax.JSON = false;
        ajax.DEBUG = true;
        arguments.IsValid = (ajax.GetSynch() == "true");
        if( !arguments.IsValid)
        {
            alert("Your phone number is incorrect, please enter a valid phone number.");
        }
    }
}

function ValidatePhone(source, arguments)
{
    var ac = document.getElementById(PhoneIds[0]).value;
    var pre = document.getElementById(PhoneIds[1]).value;
    var ex = document.getElementById(PhoneIds[2]).value;
    
    var number = "" + ac+pre+ex;
    if( number.length > 0)
    {
        var ajax = new AJAX("_ajax/ajax_ValidatePhone.aspx?p=" + number);
        ajax.JSON = false;
        ajax.DEBUG = true;
        arguments.IsValid = (ajax.GetSynch() == "true");
    }
}