Hi...
see this,am using ajax calender control for user effective.
<asp:textbox id="txtajax" runat="server" cssclass="txtajax" xmlns:asp="#unknown"></asp:textbox>
<asp:image id="img1" runat="server" height="21px" imageurl="~/Koala.jpg" xmlns:asp="#unknown">
Width="35px" />
<asp:toolkitscriptmanager id="tksm" runat="server"></asp:toolkitscriptmanager>
<asp:calendarextender id="txtajax_CalendarExtender" runat="server" popupposition="Right" format="MM-yyyy" onclientshown="ChangeCalendarView" targetcontrolid="txtajax" popupbuttonid="img1">
</asp:calendarextender>
</asp:image>
Thank u.