<!-- Original:  David K (davidwkjr@hotmail.com) -->


<!-- Begin
function a_times_b(form) {
a = eval(form.a.value);
b = eval(form.b.value);
c = 1 / 2 * a * b * b;
form.c.value = c;
}
function c_div_b(form) {
c = eval(form.c.value);
b = eval(form.b.value);
a = c / (b * b);
form.a.value = a * 2;
}
function c_div_a(form) {
c = eval(form.c.value);
a = eval(form.a.value);
b = c / (1 / 2 * a);
form.b.value = Math.sqrt(c / (1 / 2 * a));
}
//  End -->