<!-- hide script from old browsers
function calc1(form) {
a = form.a.value/100;
b = a*form.b.value;
form.total1.value = b;
}

function calc2(form) {
a = form.c.value;
b = form.d.value;
c = a/b;
d = c*100;
form.total2.value = d;
}

function calc3(form) {
a = form.e.value;
b = form.f.value/100;
c = a/b;
;
form.total3.value = c;
}

// end hiding script from old browsers -->