I am currently displaying Start, End and Subject in a javascript tooltip but I would like to also display an additional field(PhoneNumber) that is setup as an attribute of the scheduler.  According to the demo at http://demos.telerik.com/aspnet-ajax/scheduler/examples/radtooltip/defaultcs.aspx this should be possible via javascript but I am not sure how to get the attribute so it can be displayed.
Thanks in advance for any help with this.
                                Thanks in advance for any help with this.
function OnClientRequestStart(sender, args) {    args.set_cancel(true);    var tooltip = Telerik.Web.UI.RadToolTip.getCurrent();    if (tooltip) {        var element = tooltip.get_targetControl();        var apt = $find("<%=RadScheduler1.ClientID %>").getAppointmentFromDomElement(element);        $get("startTime").innerHTML = apt.get_start().format("MM/dd/yyyy HH:mm");        $get("endTime").innerHTML = apt.get_end().format("MM/dd/yyyy HH:mm");        $get("descriptionDiv").innerHTML = apt.get_subject();        tooltip.set_text($get("contentContainer").innerHTML);    }}
<telerik:RadToolTipManager runat="server" ID="RadToolTipManager1" Width="320" Height="170"
    Animation="None" HideEvent="Default" Text="Loading..." OnAjaxUpdate="RadToolTipManager1_AjaxUpdate" />
     <div style="display: none;">
    <div id="contentContainer">
        Starts on: <span id="startTime"></span>
        <br />
        Ends on: <span id="endTime"></span>
        <hr />
        Description:
        <div id="descriptionDiv">
        </div>                        
    </div>
</div>
