calendar extender didnt appear after click login page

login page code behind

protected void Button1_Click(object sender, EventArgs e)
{
// Initialize FormsAuthentication, for what it's worth
FormsAuthentication.Initialize();

// Create our connection and command objects
SqlConnection myConnection = new SqlConnection(connectionString);
string sql = "SELECT roles FROM users where empid = '" + empid.Text + "' and pwd = '" + pwd.Text + "'";
SqlCommand cmd = new SqlCommand(sql, myConnection);
SqlDataAdapter adp = new SqlDataAdapter(sql, myConnection);
DataTable ds = new DataTable();
adp.Fill(ds);
// Fill our parameters
cmd.Parameters.AddWithValue("@empid", empid.Text);
cmd.Parameters.AddWithValue("@pwd", pwd.Text);

// Execute the command
myConnection.Open();
SqlDataReader reader = cmd.ExecuteReader();
if (reader.HasRows)
{
while (reader.Read())
{

// Create a new ticket used for authentication
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(
1, // Ticket version
empid.Text, // Username associated with ticket
DateTime.Now, // Date/time issued
DateTime.Now.AddMinutes(30), // Date/time to expire
true, // "true" for a persistent user cookie
reader.GetString(0), // User-data, in this case the roles
FormsAuthentication.FormsCookiePath);// Path cookie valid for

}
}
else
{
// Never tell the user if just the username is password is incorrect.
// That just gives them a place to start, once they've found one or
// the other is correct!
lblerror.Text = "Username / password incorrect. Please try again.";
//lblerror.Visible = true;


}

reader.Close();
string roles;
roles = cmd.ExecuteScalar().ToString();
//label_role.Text = roles;
if (ds.Rows.Count != 0)
{

Session["username"] = empid.Text;

if (roles == "admin,user")
{
Server.Transfer("Home.aspx");
}
//else if (roles == "manager,user")
//{
//Server.Transfer("Manager/Home.aspx");
//}
else
{
Server.Transfer("Insert.aspx"); //("~/User/userHome.aspx");
}
}
myConnection.Close();
}

home.aspx

<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">


<asp:Panel ID="Panel2" runat="server" Width="95%">
<table class="style1">
<tr>
<td class="style4">
<asp:Label ID="Label18" runat="server" Font-Names="Arial" Font-Size="Medium"
Text="Task:">
</td>
<td>
<asp:TextBox ID="TextBox1" runat="server" Width="80%" Font-Names="Arial"
Font-Size="Small">
</td>
</tr>
<tr>
<td class="style4">
<asp:Label ID="Label19" runat="server" Font-Names="Arial" Font-Size="Medium"
Text="PIC (Person in charge):" >
</td>
<td>
<asp:ListBox ID="ListBox1" runat="server" Width="80%" SelectionMode="Multiple">
<asp:Label ID="Label26" runat="server" Font-Names="Arial" Font-Size="Small"
Text="Press Ctrl to select multiple">
</td>
</tr>

<tr>
<td class="style4">
<asp:Label ID="Label20" runat="server" Font-Names="Arial" Font-Size="Medium"
Text="Start Date:" >
</td>
<td align="left">
<asp:TextBox ID="TextBox3" runat="server" Font-Names="Arial" Font-Size="Small" >

<asp:CalendarExtender ID="TextBox3_CalendarExtender" runat="server"
Enabled="True" Format="dd/MM/yyyy" PopupPosition="Right"
TargetControlID="TextBox3">


</td>
</tr>
<tr>
<td class="style4">
<asp:Label ID="Label21" runat="server" Font-Names="Arial" Font-Size="Medium"
Text="End Date:">
</td>
<td align="left">
<asp:TextBox ID="TextBox4" runat="server" Font-Names="Arial" Font-Size="Small" >

<asp:CalendarExtender ID="TextBox4_CalendarExtender" runat="server"
Enabled="True" Format="dd/MM/yyyy" TargetControlID="TextBox4">


</td>
</tr>
<tr>
<td class="style4">
<asp:Label ID="Label22" runat="server" Font-Names="Arial" Font-Size="Medium"
Text="Status/Remarks:">
</td>
<td>
<asp:TextBox ID="TextBox5" runat="server" TextMode="MultiLine" Width="80%"
Font-Names="Arial" Font-Size="Small" Height="100px">
</td>
</tr>
<tr>
<td class="style4">
 </td>
<td align="left">
<asp:Label ID="Label13" runat="server" ForeColor="

no error.it just calendar extender didnt appear.i dont know whats wrong with my login page.after i login the home page which has textbox to insert date from calendar extender(ajax toolkit) didnt appear.didnt show up.

but the textbox which i bind to gridview working fine.the calendar extender is show up when i click the textbox to insert a date.