public void DisplayThickBox(Page page, int width, int height)
    {
        string script = "<script type='text/javascript'>";
        script += "$(document).ready(function(){";
        script += "tb.show('null', 'auto-insurance-redirect.aspx?keepThis=true&TB_iframe=true&height=" + height.ToString() + "&amp;width=" + width.ToString() + "',null);";
        script += "});";
        script +="</script>";

        ScriptManager.RegisterStartupScript(page, page.GetType(), "", script, true);

    }

^^^Method to display the thickbox...^^^

DisplayThickBox(this, 518, 321);

^^^Call to method in the click event of the button that fires it...^^^

Page is just refreshing and the thickbox is never displayed. I'm trying to call the javascript manually since im doing some other stuff before i display the thickbox in the code behind...