Nebie Question - Addition vs. Concatenation

[David Gotz <gotz@cc.gatech.edu>]

Hi everyone.

I;ve just started learning JavaScript, so I decided that my first project
would be a simple four-function calculator.  It works great except for addition.

When I add 5 + 10, I get 510.  For some reason, the procedure treats my
numbers as strings, while in the other three operations, it works fine.

The url is http://zion.gt.ed.net/calc.html

Any help you can give would be great.  THanks again.

David Gotz

____________________________
| David H. Gotz
| Georgia Tech
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| Atlanta, GA 30332-1370
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