I didn't realize until today, by the way Happy Halloween, that there is a significant interest in building and creating scary elevator ride/props for Halloween. The following links will help you with building the perfect scary elevator for your haunted house and we hope that they provide your visitors a scary experience!
DIY Scary Elevator Ride Links
http://www.ehow.com/how_8694112_diy-haunted-elevator.html
Buy the Whole Thing For Only $10,500 (for that price I think I should go into the Halloween business)
http://www.thehorrordome.com/haunted-elevator-halloween-animatronic.aspx
Scary Elevator Panels - Just add fake blood http://www.cjanderson.com/classicantiquefixtures.aspx