Оформил: DeeCo
Автор: http://www.swissdelphicenter.ch

{ 
 If you have a webpage with a Form on it, but the submit - button is an image, 
 you can use this code (using a TWebBrowser) 
}

 { 
 Falls du eine Webpage mit einem Formular hast, 
 bei welchem der Submit-Knopf ein Bild ist, 
 dann kannst du diesen Code benutzen (sowie ein TWebBrowser) 
}

 uses
   MSHTML;

 var
   iDoc: IHtmlDocument2;
   i: integer;
   ov: OleVariant;
   iDisp: IDispatch;
   iColl: IHTMLElementCollection;
   InputImage: HTMLInputImage;
 begin
   WebBrowser1.ControlInterface.Document.QueryInterface(IHtmlDocument2, iDoc);
   if not Assigned(iDoc) then
   begin
     Exit;
   end;
   ov := 'INPUT';
   iDisp := iDoc.all.tags(ov);
   if Assigned(IDisp) then
   begin
     IDisp.QueryInterface(IHTMLElementCollection, iColl);
     if Assigned(iColl) then
     begin
       for i := 1 to iColl.Get_length do
       begin
         iDisp := iColl.item(pred(i), 0);
         iDisp.QueryInterface(HTMLInputImage, InputImage);
         if Assigned(InputImage) then
         begin
           if InputImage.Name = 'submit' then
           // if the name is submit / falls der name submit lautet 
          begin
             InputImage.Click;  // click it / klick es 
          end;
         end;
       end;
     end;
   end;
 end;

 // 2. 

procedure TForm1.Button1Click(Sender: TObject);
 var
   i: Word;
   Document: IHtmlDocument2;
   str: string;
 begin
   // Schleife uber alle Bilder im Webbrowser 
  for i := 0 to WebBrowser1.OleObject.Document.Images.Length - 1 do
   begin
     Document := WebBrowser1.Document as IHtmlDocument2;
     // URL auslesen 
    Str := (Document.Images.Item(i, 0) as IHTMLImgElement).Href;
     // Dateiname des Bildes uberprufen 
    if Pos('submit_icon.gif', str) <> 0 then
     begin
       ((Document.Images.Item(i, 0) as IHTMLImgElement) as IHTMLElement).Click;
     end;
   end;
 end;