There are a number of plug-ins that didn't fit clearly within any of the previous chapters, so I've included them here. They offer features such as keeping your copyright notices current each new year, a less intrusive, in-browser alert window that doesn't prevent you accessing the rest of the current document, a function to provide tooltips for any object, the facility to add cursor trails to the mouse pointer, and a way to make a web page touch enabled for use with tablet computers and other touch devices.