I am looking for some kind of method to capturefunction-keys while positioned on a Web-page. To be more specific: I would like to capture eg. F3 when the cursor is positioned in a text-field on a Web-page.
Try the KeyDown event of the text box. It will tell you what key the user is pressing down. This event is different from the KeyPress event, in that KeyDown will detect special keys such as the function keys.