Screenshots of basic working mechanism

Herewith the VoiceXML code and screenshots of my skyscraper with transitions up and down depeneding on what the phone user says. Here is a link to the web version:
http://www.dimitridarras.com/3D/demo01.htm

To interact, call 1 646 502 9002

Hit "1" at the prompt

Say "up" (2) or "down" (8)