Tutorial Description - Macromedia Dreamweaver behaviors allow visitors to interact with a Web page, to change the page in various ways, or to cause certain tasks to be performed. A behavior is a combination of an event with an action triggered by that event. In the Behaviors panel, you add a behavior to a page by specifying an action and then specifying the event that triggers that action.
For example, if you want a Web page to open in a new browser window when your user clicks a link, you can use a behavior to achieve this effect. The behavior is made up of the (onClick) event and the Open Browser Window action.