php ajax tooltip with a database

Demo: http://esdi.excelsystems.com/wsexmpphp/ajax_tooltip.php?wsnum=146

http://php-ajax-code.blogspot.com/2007/07/ajax-triple-dropdown-with-states-cities.html

http://www.css-resources.com/rectangular-tooltips-getting-data-from-mysql-db-using-ajax.html