This Q&A is part of a weekly series of posts highlighting common questions encountered by technophiles and answered by users at Stack Exchange, a free, community-powered network of 100+ Q&A sites.

The most commonly used JavaScript effect on the Web is the image rollover. For the one person with access to the Web who’s never seen one before, an image rollover happens when you move your cursor ...

Anyway, with an answer like this, not only have they seen how easy it is to mess with running javascript code on the client end, but its taught him HOW exactly it can be accomplished. It also informs ...