Dynamic HTML

Navigator 4.0 will support some very powerful new JavaScript features that allow it to create dynamic documents. These exciting new features are the subject of much speculation, but unfortunately, the details are still not known outside of Netscape, and the following descriptions must be somewhat vague.

• Navigator 4.0 should support a number of new JavaScript event handlers, which will enable JavaScript programs to respond to individual keystrokes, and to mouse-button press and release events, rather than to a simple "on click" event.
• Navigator 4.0 will support a new <LAYER> tag, will will allow HTML text and objects to be positioned at absolute cordinates within a window, and to be stacked on top of each other (hence the name "Layer"). It is expected that this will mean that many HTML objects in JavaScript will have x and y coordinate properties, and that JavaScript programs may even be able to set layer coordinates to dynamically move "layers" within the document.
• Navigator 4.0 will support style sheets and will also include a feature known as "JavaScript Style Sheets." This is expected to give JavaScript programs control over the style in which documents are displayed. It is worth noting that Microsoft is working on a competing technology for dynamic HTML documents code-named "Trident."