If you know how to write JavaScript, you can add your own behaviors to the list of choices in Dreamweaver. You can find instructions for creating and adding new actions in the Dreamweaver Exchange section of Macromedia's site. You can also find new behaviors created by Macromedia, as well as other developers, that you can download free of charge and then add to Dreamweaver.

To automatically go to this site to get new behaviors, click the plus sign in the Behaviors panel and select the Get More Behaviors option at the bottom of the drop-down menu. This launches your default Web browser and connects you to the Dreamweaver Exchange section of the Macromedia Web site, if you are online.