ajax calander control not appear under TextBox Bottom

Hi,

In my web page i am using calandar control for dates. But when i click on the textbox calander control appear upper left corner of the browser. No css attach to the textbox and also for td. Here is my aspx code and image.

ASPX

<tr><td style="text-align: right; padding-right: 5px;" width="30%">
                                        Client Notice Date:</td><td style="text-align: left;" width="70%"><asp:TextBox ID="txtBookingClientNoticeDate" runat="server" Width="40%"></asp:TextBox><asp:CalendarExtender ID="txtBookingClientNoticeDate_CalendarExtender" runat="server"
                                            Enabled="True" TargetControlID="txtBookingClientNoticeDate" PopupPosition="BottomLeft"></asp:CalendarExtender></td></tr>