procedure TForm1.Button1Click(Sender: TObject);
begin
(((WebBrowser1.Document as IHTMLDocument2).body.all as
IHTMLElementCollection).item('Topicid', 0) as
IHTMLInputElement).value := Edit1.Text;
(((WebBrowser1.Document as IHTMLDocument2).body.all as
IHTMLElementCollection).item('ReplyContent', 0) as
IHTMLTextAreaElement).value := Memo1.Text;
(((WebBrowser1.Document as IHTMLDocument2).body.all as
IHTMLElementCollection).item('XmlRePly', 0) as
IHTMLFormElement).submit;