In this column we have introduced an implementation of a scroller box. We have shown you the details of the algorithm with a very explicit multi-step diagram. We have explained how to create the layers involved and how to make the proper relations between them. We have discussed how to build the HTML feed and presented you with our example feed of DOC JavaScript columns. We have also warned you of pitfalls in Netscape Navigator that you should avoid in your scripting.

In this column you have learned:

• How to devise a scrolling algorithm.
• How to use the Netscape Navigator's Layer object.
• How to position a layer within another layer.
• How to scroll the box.
• How to stop the box and release it with the mouse.
• How to workaround Netscape Navigator's problems.
• How to prepare the input file (feed).
• How to position a scroll box.

We have shown you the code for the Scroll Box, and provided you with its zipped version to download.