Finding code that you worked out previously

One of the problems that I have found in the past is that I had worked out how to code something or other and I had documented it with a webpage that possibly had an example. The thing was finding it again.

This page was promted by the requirement to discourage the copying of images from some of my webpages. To do this I wanted to intercept the right-click (or rather the "context-menu" in Windows