You can edit behaviors through the behaviors panel.
How do I edit a Behavior?
1. In the document window, select the object you want to delete the behavior from. If it is the whole page, select the whole body tag, opening to closing, or click on the work <body> in the bottom of the document window.
2. In the behaviors panel, double click on the actions name to bring up a dialog
box for that action.
3. Make changes and click "ok" when done.