For a better look into all the ways default javascript functionality can annoy your visitors, I wrote an all-encompassing script about two years ago called anno

For a better look into all the ways default javascript functionality can annoy your visitors, I wrote an all-encompassing script about two years ago called annoying.js: https://gist.github.com/Kilian/767982 https://gist.github.com/Kilian/767982 featuring classics such as disabling right mouse click, text selection and leaving the page!