webcontrol in asp.net

[SHHHH]

I write this code in webpart.aspx and add this file to my project:
<div >
<asp:WebPartMan ager ID="WebPartMana ger1" runat="server">
</asp:WebPartMana ger>
<table runat ="server" >
<tr >
<td>
<asp:WebPartZon e ID="WebPartZone 5" runat ="server" >
<ZoneTemplate >
<asp:Calendar ID="Calendar1" runat="server" Title="Time & Date" BackColor="Whit e" BorderColor="#3 366CC" BorderWidth="1p x" CellPadding="1" DayNameFormat=" Shortest" Font-Names="Verdana" Font-Size="8pt" ForeColor="#003 399" Height="200px" Width="220px">
<TodayDayStyl e BackColor="#99C CCC" ForeColor="Whit e" />
<SelectedDaySty le BackColor="#009 999" Font-Bold="True" ForeColor="#CCF F99" />
<OtherMonthDayS tyle ForeColor="#999 999" />
<TitleStyle BackColor="#003 399" BorderColor="#3 366CC" BorderWidth="1p x" Font-Bold="True"
Font-Size="10pt" ForeColor="#CCC CFF" Height="25px" />
<NextPrevStyl e Font-Size="8pt" ForeColor="#CCC CFF" />
<SelectorStyl e BackColor="#99C CCC" ForeColor="#336 666" />
<WeekendDayStyl e BackColor="#CCC CFF" />
<DayHeaderSty le BackColor="#99C CCC" ForeColor="#336 666" Height="1px" />
</asp:Calendar>

</ZoneTemplate>
</asp:WebPartZone ></td> </div>

But this gives one problem at runtime i.e how to retain the webpart control, once closed by mistake? (at runtime).
I am not able to view the webpart once i closed it on runtime.
Another problem is that I am using vs2005 but I am not able to find webpartpagemenu control in web parts in toolbox

pls help