Hi, I'm having trouble getting the values from text box when using ColorBox http://colorpowered.com/colorbox/

I have a form that opens a ColorBox modal dialog.In the modal i have a asp.net textbox and a button when i click the button i'm getting the postback but the value of the textbox is always empty.

<script type="text/javascript">
        $(document).ready(function () {
            $(".example8").colorbox({ width: "50%", inline: true, href: "#inline_example1" });
        });
    </script>

....

<form id="form1" runat="server">
    <a href="content/ohoopee1.jpg" rel="example8" title="abc">Click here</a></p> <a class='example8'
        href="#">Inline HTML</a></p>
    <!-- This contains the hidden content for inline calls -->
    <div style='display: none'>
        <div id='inline_example1' style='padding: 10px; background: #fff;'>
            <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">LinkButton</asp:LinkButton><asp:TextBox
                ID="TextBox1" runat="server"></asp:TextBox>
        </div>
    </div>
    </form>

Any help will be appreciated. Thanks.