Sometimes this work, sometimes no...

On some computers I receive error on code "if (top.window)":

Error: Access is denied.

:(
 

my c# code:

  protected void Page_Load(object sender, EventArgs e)
    {
        if (IsPostBack)
        {
            Page.Validate();
            if (Page.IsValid)
            {
                if (!Page.ClientScript.IsStartupScriptRegistered("redir"))
                    Page.ClientScript.RegisterStartupScript(this.GetType(), "redir",
                        @"<script type=""text/javascript""> if (top.window) { top.window.location.href = '/Registration/CompleteInstallation/tabid/60/Default.aspx'; } </script>");

            }
        }
    }
 

i haven't any javascript code in .aspx file...

thanks!