vb6 web browser form

I have vb6 web browser form that displays various html pages. When a user
clicks on a link (to what I will call the “destination page”) within the
html page the web browser form’s BeforeNavigate2 event is fired and code
within that event loads and shows a regular vb form. The “destination
page” contains javascript that is supposed to send the browser back to the
original page which has the link the user clicked, but instead the web
browser form displays a “404 File not found” error page. I can’t figure out the problem…any ideas??