关于gridview的javascript函数,怎么写

下面是我的asp.net页面的代码:
HTML code:

<div>
<span style=" font-size:12px; color:#9399A7;">选择：</span>
<a id="cbxall" href="#" class="font" >全部</a>
-<a id="cbxnone" href="#" class="font">无</a>
</div>
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
onselectedindexchanged="GridView1_SelectedIndexChanged" Width="100%"
Font-Size="12px">
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="CheckBox2" runat="server" />
全选
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" />
</ItemTemplate>
<ItemStyle Width="30px" />
</asp:TemplateField>
<asp:BoundField HeaderText="收信人" DataField="Receiver">
<ItemStyle Width="100px" />
</asp:BoundField>