<!--

function SO2(form) {
a=eval(form.a.value)
b=eval(form.b.value)
c=eval(form.c.value)
d=eval(form.d.value)
e= 1.1 + (0.02 * d) + (0.031 * c)
f= (Math.pow(10, e))
g= (Math.pow(10, a))
h= (f * b) / (g + f)
i= (g + f) * 0.4 / f
j= (g + f) * 0.6 / f

form.SO2Act.value = h
form.SO2Stat.value = i
form.SO2Cor1.value = form.SO2Stat.value-b;
form.SO2Let.value = j
form.SO2Cor2.value = form.SO2Let.value-b;
}

// -->