iWR tooltip plugin lets you add tooltips to your post or page or in your template file via a shortcode
[iwrtooltip title=”this will show in a tooltip”]hover over me to see tooltip[/iwrtooltip] or via a HTML Tag
<a class=”normalTip” title=”this will show in a tooltip” href=”#”>hover over me to see tooltip</a>
I was looking for a plugin exactly like this and what do you know, it hasn't been updated for two years but works just as wonderfully.
Does what it says and is definitely compatible still.