Hi. Unrelated to embedded programming. I like your tooltip popups on your website. Is this coded in-house or are you using a public domain or commercial library for them?
Thank you.
Using javascript libraries like jQuery+jQueryUI or prototype+scriptaculous these kind of things are easy to do.
I see tinyclr uses jQuery.
Then you can search for a plugin f.e: bassistance.de » jQuery plugin: Tooltip
and tune it a little 
It’s done in-house and the library we used is jQuery.