Vielen Dank für die Hinweise zum Stichwort 'Mouseover, Rollover'.
'Tooltip' ist in Joomla wohl auch geläufig und liefert zahlreiche Plugins, habe ich festgestellt:
CSS3 Tooltip plugin for Joomla
Tooltip plugin - free extension for joomla
Tooltip plugin - free extension for joomla 3.x and joomla 2.5
www.themescreative.com
Styling - Tutorial - Tooltips - Regular Labs
Themes
Tooltips comes with a number of preset Themes you can choose from:
[onlypro]
[onlypro]
You can override the Theme you...
docs4.regularlabs.com
16 Best Open-Source Tooltip Plugins For UI Design
Take a shortcut to building attractive and functional tooltips with these JavaScript, jQuery, CSS, and HTML libraries. No coding skills? No worries. Scroll…
www.chameleon.io
Easy Tooltip for Joomla
Discover the best apps, extensions, plugins, widgets, and modules for website builders & CMS platforms via the Common Ninja Search Engine.
www.commoninja.com
W3Schools online HTML editor
The W3Schools online code editor allows you to edit code and view the result in your browser
www.w3schools.com
Ich werde mich mit den Vorschlägen mal auseinander setzen.
vG