Live Chat Script?
Some examples are like the ones found on:
PayPal Alternative, Merchant Account, Accept Credit Cards Online <- note the tab at the bottom right "leave a message"
Web Hosting Services, Reseller Hosting, VPS Hosting, and Dedicated Servers by HostGator <- note the top right "live chat" option
Thanks.
Edmund
Robin
Are you using WordPress? Have you tried qSandbox yet?