The simplest way to preload an image is to instantiate a new Image() object in JavaScript and pass it the URL of the image you want preloaded. Say we have an image called heavyimagefile.jpg, which ...

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 ...

In the previous lesson, I showed you how to do a simple image rollover. In the real world, however, it’s rare that you’ll ever have one rollover on a page. In this column, I’ll show you how ...

and image swaps. Keep following along as Thau gets down and dirty with the JavaScript Document Object Model, windows and frames, JavaScript syntax with loops, arrays, and functions, and forms.