Does anyone know where i can find a FREE script to do (a claculation) that is being done on this page?

url is: http://www2.eletter.com/pricing/postcard/postcard.asp

Thanks

PS: If you know of a tutorial or if you can or would like to help me I would appreciate it. I don't know much Javascript

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Bradley's Bromide:
"If computers get too powerful, we can organize them into a committee -- that will do them in."