To make this work for MSIE, the phrase that should trigger the tooltip must be marked up as HTML a-Element, in wiki-Syntax something like:

The next [[#|word<font class="hiddenStructure">Tooltip text</font>]] displays a tooltip.

The next wordTooltip text displays a tooltip.

Compare my CSS: User:Pjacobi/monobook.css

Pjacobi

Heck, I got something wrong. Must make some more experiments. See http://www.meyerweb.com/eric/css/edge/popups/demo.html in the meant time. --Pjacobi 00:27, 1 Nov 2004 (UTC)
Thanks, it's an idea to experiment with. For IE, one needs to make the wikipedia software create this HTML code: <a href="#" class="info">highlighted text</a>, because the a element is the only element that does the hover thing in IE. I haven't yet found a way to do this. It could maybe done use some javascript? --Taka 07:45, 1 Nov 2004 (UTC)