People have different thoughts on how they should enter a telephone
number into a field on a web form. Some people may enter the number
as (nnn) nnn-nnnn and some as nnn-nnn-nnnn and some may omit the area
code entirely. Since database formats need to be consistent and field
sizes should be kept to a minimum, I found it necessary to write a function
to validate telephone number fields before posting them to a database.
I prefer the nnn-nnn-nnnn format so that is what I used with this example.
This VBScript example accepts a string as the input parameter and returns
the Boolean value of True or False.
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