at fist I thought it should not be too difficult to embed the navigation pane of the Webhelp output into an HTML-based frontend appication. After all, WebHelp uses frames and the entire navigation pane is a frame too - but evidently it is more tricky than I thought. Has this ever been attemped?
It would be nice to integrate the TOC and search into the web page. Calling topics into a new window is supported by the TOC entry properties and should be achievable by modifying the search function as well.