With the plugin Tooltip CK you can easily add some tooltips in your WordPress website that will be displayed with a nice animated effect. It can display everything you want: text, image, links….
Demo of Tooltip CK
Put your mouse hereI’m little friendly boy
Demo with image
Or here for another demoTooltip CK is a nice tooltip plugin for WordPress. This demo includes an image and a link on which you can click !
Demo with 2 images
Tooltip CK is a nice tooltip plugin for WordPress