title: My popup requires re-login
body: <p>Good afternoon everyone! I am already logged in to my ASP website that uses C# code behind however, when I go to another page it triggers a popup and the popup wants me to re-login, how do I cause the popup to already be logged in to my session?</p>
  
  <p>am using the following code in page_load to trigger the popup:</p>
  
  <pre><code>        if (!IsPostBack)
          {
              ScriptManager.RegisterStartupScript(Page, typeof(Page), "OpenWindow", "window.open('http://website', 'target=_blank');", true);
          }
  </code></pre>