Here is the J-Ads Applet. And it's free . J-Ads is very easy to install on your web page. You have to fill basic parameters for a simple use.
Extra parameters are also available for advanced users.
First you have to copy Area.class and jads.class in the directory of your web page. Then you have to fill the applet tag in the HTML source. They are displayed in the Status Bar when active. During transitions links are not active. Transition between features of the grid.