How do I execute javascript from code behind where the button inside an updatepanel

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C#

Javascript

Hello everyone

How do I execute javascript from code behind where the button inside an updatepanel

I want to open a div inside a fancybox and I am opening it from code behind
and It is working
but I want to put the button inside an updatepanel
but after that the javascript is not triggering
maybe because I am putting it inside document.ready
what else we can put the trigger in to work

html

<a id="various"  runat="server" href="#inline" style="visibility: hidden"></a>
                <asp:Literal ID="fancyLtr" runat="server"></asp:Literal>
                <asp:UpdatePanel ID="UpdatePanel6" runat="server">
                    <ContentTemplate>
                        <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
                    </ContentTemplate>
                </asp:UpdatePanel>

javascript

$(document).ready(function () {
 $("#ContentPlaceHolder1_various").fancybox();
});

code behind

protected void Button1_Click(object sender, EventArgs e)
    {
        various.Attributes["href"] = "#inline";
        fancyLtr.Text = "<script>jQuery(document).ready(function() {$(\"#ContentPlaceHolder1_various\").trigger('click');});</script>";
    }

Thanks in advanced