Thanks. The interactive guide turned out to be a bigger project than I planned, but I hope to reuse it for the 741 op amp. To generate the data for the guide, I ended up drawing boxes around all the components in Open Office, and then parsing the XML to extract the regions for each component and generate the JavaScript data.

The non-rectangular resistors were inconvenient to represent. Also, the 7805 has a lot of overlapping transistors (e.g. sharing the collector), which messed up my original system that assumed everything inside a box belonged to the box, so I ended up tagging each component with a different color. Maybe this is more than you wanted to know about the system :-)