RadDatePicker with calendar autopost back does not work correctly

[Rajesh]

Hi I am using code as shown below: When I click on Popup to open calendar it opens it, but immediately it does a postback. Dont know why this post back happens.
in OnDayRender event I am changing the holiday pattern background colors.

<asp:UpdatePanel ID="updCal1" runat="server">
                                        <ContentTemplate>
                                        <panel>
                                         <telerik:RadDatePicker ID="radcal1" runat="server" AutoPostBack="true">
                                            <ClientEvents OnPopupOpening="OnPopupOpening" />
                                            <Calendar OnDayRender="cal_DayRender" runat="server" AutoPostBack="true"></Calendar>
                                        </telerik:RadDatePicker>
                                        </panel>
                                        </ContentTemplate>                                       
                                        </asp:UpdatePanel>

<script type="text/javascript">
    function OnPopupOpening(sender, args) {
            sender.get_calendar().raise_dayRender();
        }
</script> 

[Princy]

Hi Rajesh,

Please remove the AutoPostBack="true" from the Calendar embedded control which works fine at my end.

ASPX:

...
<telerik:RadDatePicker ID="radcal1" runat="server" AutoPostBack="true">
   <ClientEvents OnPopupOpening="OnPopupOpening" />
   <Calendar ID="Calendar1" runat="server" OnDayRender="cal_DayRender">
   </Calendar>
</telerik:RadDatePicker>
...

Thanks,
Princy.