Tooltips can show additional information. On the Dutch wikipedia, i did an experiment with stylesheet based tooltips. It does not work in Internet Explorer, but it does work (with some glitches) in Mozilla/Firefox. This page is to explain and demonstrate it on the English wikipedia.
The idea is based on this website: http://psacake.com/web/jl.asp
To make it work, it is required to make an adaption to your personal stylesheet (that can be done at User:YourName/standard.css or User:YourName/monobook.css or whatever style you have selected in your preferences.
/* start tooltip code */ div.info { z-index:24; /*required */ position:relative; /*required */ background-color:yellow; /*use any color you like */ cursor:help /*optional, or use another cursor */ } div.info:hover { z-index:25; /*required */ background-color:pink /*use any color you like */ } div.info:hover div.urlexpansion { display:block; /*required */ position:absolute; /*required */ /*border and size specifications, change as you like */ top:2em; left:2em; width:15em; /* colors, change as you like */ border:1px solid #0cf; background-color:#cff; color:#000; } /* end tooltip code */
I might create a demo from the text of a real article to demonstrate how it would look like there.
Also it hasn't been tested with more complicated pages, with tables, images etc.
1. Put the whole text of an article in a div.
2. Use this code:
<div class="info" style="display:inline;">visible text<div class="urlexpansion">text of the tooltip</div></div>
Somebody made a template, this is to show (if) how it works.
move mouse over
expect a longer comment on this line