Using ALT Tooltips (generated by the HTML ALT attribute) is not
a good idea as the time they can be displayed can not be controlled
(they have a tendency to disappear right when the user is reading
something important) and secondly, ALT Tooltips provide no formatting
so stuffing an ALT Tooltip with everything that needs to be said results
in the display of a difficult to read run-on sentence.
I've played tricks with spaces trying to format ALT Tooltips but the
results are not acceptable. Third, ALT Tooltips provide no interactivity.
Finally, reserve the use of ALT Tooltips to comply with accessibility
requirements as the screen readers rely on them.
The better way to achieve this objective requires using client-side DHTML
to create a DHTML Tooltip which means hiring somebody to develop
or integrate JavaScript and CSS with the Document Object Model.
There are prebuilt libraries such as the DHTML Tooltip Generator [1]
noting that the use of the word 'Tooltip' has become generic when the
Tooltip can be generated using different methodologies. Another library
is overLib [2] which has been around quite awhile.
[1]
http://handsonline.net/toolbox/dtooltip.htm
[2]
http://www.bosrup.com/web/overlib/
--
<%= Clinton Gallagher
A/E/C Consulting, Web Design, e-Commerce Software Development
Wauwatosa, Milwaukee County, Wisconsin USA
NET (e-mail address removed)
URL
http://www.metromilwaukee.com/clintongallagher/