Population Calculator for SF Authors

Francis Turner, November 2003

Usage tips:

There is no error checking. If you enter a non numeric value then it will be treated as 0. Negative numbers are also treated as 0.
Use the Calc button to do the calculations for as many decades as you wish (if decades is not a number greater than 1 then it does it once).
Use the Rollback button to go back one decade
the clear button will rollback to the start if you have done some calculations or clear the entries if you have no calculations

You can change any of the values between pressing the calc button to simulate a change in health or a war or ...

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PS Tested on Mozilla 1.5 and IE 5.5, Javascript may not work on other browsers

Year	Birth rate	Adolescent Population	Adolescent Death Rate	Breeding Age Population	Breeding Age Death Rate	Middle-Aged Population	Middle-Aged Death Rate	Elderly Population	Elderly Death Rate	Total