Just thought I would share something that I tried that is totally cool for an on the go calculation using the iTouch or iPhone.
I got an app for my iTouch called AirSharing. It's an Apple app (was free when I downloaded it) that allows you to basically turn you iTouch into a ftp site that you can connect via your web browser on your computer.
I uploaded the offline copy of BrianG's Speed calculator here:
http://www.scriptasylum.com/rc_speed/rc_speed.zip
Unzipped the folder structure and loaded the entire thing to the iTouch. Then when you browse the folder in AirSharing and run the index.html page it launches the full R/C Calculations page and is 100% fully functional.
Thanks again Brian!!