This is from the Google Summer of Code 2012 Trello board (https://trello.com/docbook_webhelp). Subtasks include:
1. Compute header height and use that computed value in main.js when adjusting for links to anchors.
2. Update any jquery code, css, etc to latest version.
3. Improve customization of WebHelp header and footer panes (another task has already been created for this one).
4. The text "Show the toc tree" and "Hide the toc tree" in main.js is not i18nized.