In this column we started a preview of the new JavaScript features in Internet Explorer 5.0. One of the most powerful new features is DHTML Behaviors. After reading this column you should know how to implement a DHTML Behavior in Internet Explorer 5.0. You have learned how to define a Behavior using a scriptlet, which includes both the interface and detail implementation portions. We have shown you how a Behavior implements several concepts from object-oriented languages such as encapsulation, code sharing, abstraction, and API.

In this column you have learned:

• How to emulate Behaviors with Internet Explorer 4.0x.
• How to create a scriptlet.
• How to pass data to a Behavior.
• How to pass objects to a Behavior.
• How to send events from a Behavior.
• How to share a Behavior between multiple elements.
• How to map Behavior's features with object-oriented concepts.

We have also shown you the entire file for the Behavior scriptlet and the HTML page.