This is the text that is presented as a 'ToolTip' when the mouse rolls onto an object and pauses there for a few moments. The MSIE browser and the Netscape 6.0 browser will display this text as a small popup comment box. Earlier versions of Netscape prior to version 6.0 did not support this capability, so it should be considered somewhat implementation-dependent until the penetration of newer browsers increases.

When aural style sheet support is provided by a browser, this value might be spoken as the mouse rolls over it.

Warnings:

• This property is not the name of the object. The ID tag attribute is a more reliable way of making that association, since it assists with the document.all[] array construction and indexing on MSIE, and is more portable across browsers when accessing objects associatively.

• Another recommended technique is the DOM compliant getElementById() method which in the longer term will become more prevalent.

• This is also not the same as the altText on an image, which may also appear as a ToolTip in some browsers.