Hi, I need a form with two tabs (US & Metric). Each form has two radio buttons, a picklist and two free text fields to hold numbers. And a 'calculate' button on each form. The calculation takes the option chosen in the radio button (male/female) and the option chosen in the picklist to apply a constant to the two numbers and produce a result eg

If option = 'male' and picklist = 'moderate' then constant = 5. If value a = 10 and value b = 2 then the calculation = 5 * 2 * 10/2 for a result of 50

Some error checking is necessary to check for valid numbers in the two free text fields and the range is valid ie between 5 and 50

Cheers, L