i had doubt in web browser control about Script-error

WebBrowser1.ScriptErrorsSuppressed = true;

 // Hides script errors without hiding other dialog boxes.
private void SuppressScriptErrorsOnly(WebBrowser browser)
{
  // Ensure that ScriptErrorsSuppressed is set to false.
  browser.ScriptErrorsSuppressed = false;

  // Handle DocumentCompleted to gain access to the Document object.
  browser.DocumentCompleted +=
    new WebBrowserDocumentCompletedEventHandler(
      browser_DocumentCompleted);
}

private void browser_DocumentCompleted(object sender, 
  WebBrowserDocumentCompletedEventArgs e)
{
  ((WebBrowser)sender).Document.Window.Error += 
    new HtmlElementErrorEventHandler(Window_Error);
}

private void Window_Error(object sender, 
  HtmlElementErrorEventArgs e)
{
  // Ignore the error and suppress the error dialog box. 
  e.Handled = true;
}