This plugin requires the Dimensions plugin and jQuery version 1.1.3+.
It allows you to define a gradient fill and have an element filled with a gradient. You can set the direction of the gradient (right-left or up-down) and the opacity of the gradient easily.
It uses the excellent jQuery JavaScript library developed by John Resig at http://jquery.com.
You can see some examples at http://www.unitorganizer.com/javascript/gradients/.
View the jquery.gradient.js file for information on settings and some simple examples.