To be compatible with the static layout manager the enclosing class has to be the generic activeGroup rather than the specific activeHGroup The activeHGroup is the one used for tuning attributes of the absolutely positioned elements.

CSV list of additional include files (either .js or .css) that should be included when this component is used on a page.
By default, the file extension (.js or .css) is used to determine whether an item in the list is a script include or a style include. You can override this behavior by adding the terms "script:" or "style:" to the beginning of the file name or names. This prefix is not used as part of the include filename.

If defined, this property indicates that one of the two panels is an auto-open/auto-close sidebar panel and that the panel should expand when the mouse enters its "split"-defined bounds and grow until it reaches the width given in the autoExpand parameter. The value is always interpreted in pixels. A positive value designates the left pane for auto-expansion. A negative value designates the right.
The default value (null) indicates that the auto-expansion feature is not used by this instance of the widget.

This indicates a file name for an image to use for painting the dragable partition handle. This image should be at least as wide as the handle thickness and is repeated vertically along the length of the handle.
The default value is a PNG file of a left-higlighted gray gradient, bounded by black on either side.

This indicates the width of the pane partition handle in pixels. Due to the dynamic functional nature of the element, the width of this bar cannot be set via CSS and must be specified via this property.
The default value is "7", resulting a drag handle a little under one eight of an inch (2 mm) wide on most screens.

if true, this indicates that the user is not to be allowed to resize the panes.
If false, user adjustment of the pane sizes is allowed via dragging the pane handle with the mouse. If user resizing is enabled, the mouse pointer will change to an east-west resize cursor when the mouse is in potential drag position.
The default value is "false"

This indicates a sound file to be played when an auto-expansion window grows or shrinks. If not defined or null, no sound accompanies the animation.
The default is "null"

Defines the division between the two panes.
A value with a % sign is interpreted as a proportional division between the left and right panes and is recalculated to maintain this ratio whenever the base division is resized by any means. Manual adjustment of the value continues to be interpreted as a percentage split.
A positive value not constaining a percent sign is interpreted as a fixed reserve width for the left child. Any adjustments to the total width of the base container are reflected in the geometry of the right pane only.
A negative value (which cannot contain a % sign) is interpreted as a fixed width for the right pane. Any adjustments to the total width of the base container are reflected in the geometry of the left child.
Manual adjustment of a left or right reserved width will change the size of the reserve and these fixed sizes will be respected even as the window is resized.
The default split is "50%"

The HTML generated here is NOT the final DOM structure of this component. At the client, the information embedded here will be used to build a more complex DOM subtree under the control of an active client-side layout manager. The exact structure of this expansion is not important for most users of this particular component, however, it _is_ useful to not that the handle dividing the panes is of the HTML class zenHPaneHandle for the purposes of CSS style references.

The code generated by the server is NOT the complete structure for the activeHGroup. Like other client-side layout managers, only the necessary meta-data is sent to the client. The main processing logic is stored in a client-side, cache-able JavaScript file (zenActiveHGroup.js) To complete the connection between the meta-data description and the code library, the manager class must be registered with the generic client-side layout manager. The generic manager maintains a list of classes that require special handling and the JavaScript code bodies that perform such handling. A call to ZLM.initLayout() scans the DOM to find any meta-data classes (such as this one) and "unpacks" them into DOM structures for local geometry maintenance. This is all done behind the scenes via the Zen classes onload handler.

Set the value of a named property.