Extremely simple example of turning background colors of the cells of the table on and off with mouse events to simulate a chalkboard. You can add more rows and columns.

This comprehensive tutorial explains various implementations of JavaScript rollovers. It discusses: How to use the document.images object, How to make your rollovers backward compatible, How to create an instance of the Image object, How to combine several rollovers to create a menu, How to create multiple rollovers, How to ensure maximum 'transition' quality, and How to create nested rollovers. It discusses: How to use the document.images object, How to make your rollovers backward compatible, How to create an instance of the Image object, How to combine several rollovers to create a menu, How to create multiple rollovers, How to ensure maximum 'transition' quality, and How to create nested rollovers.

Sometimes you don't want the visitor to be able to click the right mouse button and do all the stuff associated with it. Although personally I'm not in favor of such gimmicks and limit the visitor's independence, you learn something new in this tutorial.

Found this on groups.googl.com courtesy of "Kastor". Allows you to change the colors of a table background when your mouse hovers over it.