Test1

This is a test file for the LinkNavigator.

First Section

The Link buttons and Up and Down buttons pass a new src to the iframe with red border, on the right, using a JavaScript retrieved iframe reference.

Second Section

The panel of buttons at the bottom of the left panel post messages to the page hosted in the iframe. The messages request the current document to move up or down a hidden embedded sections list, or move up or down an embedded page list. The bottom two buttons request toggle of the display of either the section list or page list by unhiding or hiding.

Third Section

Since an iframe host cannot directly execute JavaScript owned by hosted documents, Messages are required to request the document to run the appropriate JavaScript functions.

Fourth Section

All of the Explorers use this technique to provide user control over the embedded document.