This plugin is a great way to attract your visitors to a specific point from your page. Approach, the jQuery plugin that we are talking about can easily animate CSS properties based on distance to an object. Basically, approaching a specific HTML element you can animate it however you want. The closer you get to the specific object, the more the style will be applied.
You can use any CSS attribute on this, from opacity to font-size everything is possible (keep in mind that it accepts the same attributes as the jQuery animate accepts). Also, if you have the jQuery UI Core Effects installed, it will also accept color-based properties. (type=Object, default=None).