The more I use the CF8 Ajax features, the more I like them.
CFTOOLTIP is a fairly simple tag, but you can do some fairly powerful things with it.
TIP #1 – Styling
You can style a cftooltip to look like a pop-up window or Netflix-style pop-up. Here's a small clip to put in your page and experiment with.
border: 2px solid #EE2130;
TIP #2 – Ajax it!
Instead of using the tooltip="my text" method of displaying the tooltip, use the sourcefortooltip="" attribute. With this, you can push in dynamic tooltips with more complex content, such as images and formatting. Like this…
<img s r c="myimage.jpg" /></cftooltip>
Then, in myajaxcontentfile.cfm, you can have it push back images, or more complex layouts and information. This could be drawn from a database, or just as HTML in the file.