I want to be able to change the text value of checkbox id="chkBxHeader" to Check when clicked and Uncheck again in javascript
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" DataKeyNames="UserId"
AllowSorting="True" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"
>
<Columns>
<asp:TemplateField HeaderText="Select" >
<ItemTemplate>
<asp:CheckBox ID="chkBxSelect" runat="server" />
</ItemTemplate>
<HeaderTemplate>
<asp:CheckBox ID="chkBxHeader" Text="Uncheck" onclick="javascript:HeaderClick(this);" runat="server" />
</HeaderTemplate>
</asp:TemplateField>