Browser Support & 508

Netscape 4.7 cannot display certain visual nuances of the standard tree control. This tree has no borders and the title height differs from the standard tree (figure 1).

This graphic is explained in the accompanying text.

Figure 1: Example of the Standard Tree

This graphic is explained in the accompanying text.

Figure 2: Example of the Tree in Netscape Navigator 4.7

The tree view is always opened completely in Netscape 4.7. It is not possible to expand and collapse nodes locally. The application has to handle these operations (requires server round-trip).

Editability in Style Editor

In the Style Editor, it is possible to modify the following attributes of the tree view control:

Table 1: Editable styles for the tree view control
Group	Style	IE5 and above	Netscape 4.7
Level Background Colors	Background Color of 1st Level	x	x
	Background Color of 2nd Level	x	x
	Background Color of 3rd Level	x	x
	Background Color of 4th Level	x
Tree Icons	URL to "Expand" Icon	x
	URL to "Collapse" Icon	x
	URL to "Node" Icon	x	x
	Height of Tree Icon	x	x
	Width of Tree Icon	x
Container	Background Color of Container Title	x	x
	Font Color of Container Title	x	x
	Height of Container Title	x
	Container Border	x
	Bottom Border of Container	x
	Cell Padding	x

Accessibility - 508 Support

Keyboard
Each tree node is inserted into the accessibility hierarchy by default.
Default Description
Is provided by the HTMLB rendering engine for each tree node.
Application-specific Description
Set an additional description using the setTooltip method for each tree node if needed.