// Do not copy the code below. Legal action will be taken without further notice - Property of John Person Inc.
var decPlac = 4;

function toDec(num,place) {
return (Math.round(Math.pow(10,place) * num) / Math.pow(10,place));
}

function a_plus_b_plus_d(form) {
var a=Number(form.a.value);
var b=Number(form.b.value);
var d=Number(form.d.value);

var c=a+b+d;
form.ans.value = toDec(c,decPlac);
}

function c_div_e(form) {
var c=Number(form.ans.value);
var e=Number(form.e.value);

var f=c/e;
form.nationalfutures.value = toDec(f,decPlac);
}

function f_times_h(form) {
var f=Number(form.nationalfutures.value);
var h=Number(form.h.value);

var g=f*h
form.ans1.value = toDec(g,decPlac);
}

function g_minus_b(form) {
var g=Number(form.ans1.value);
var b=Number(form.b.value);
var i=g-b
form.nationalfutures1.value=toDec(i,decPlac);
}

function f_plus_a(form){
var f=Number(form.nationalfutures.value);
var a=Number(form.a.value);
var j=f+a
form.ans2.value=toDec(j,decPlac);
}

function j_minus_b(form){
var j=Number(form.ans2.value);
var b=Number(form.b.value);
var k=j-b
form.nationalfutures2.value=toDec(k,decPlac);
}

function g_minus_a(form){
var g=Number(form.ans1.value);
var a=Number(form.a.value);
var l=g-a
form.nationalfutures3.value=toDec(l,decPlac);
}

function f_minus_a(form){
var f=Number(form.nationalfutures.value);
var a=Number(form.a.value);
var m=f-a
form.ans3.value=toDec(m,decPlac);
}

function m_plus_b(form){
var m=Number(form.ans3.value);
var b=Number(form.b.value);
var n=m+b
form.nationalfutures5.value=toDec(n,decPlac);
}

function f_minus_b(form){
var f=Number(form.nationalfutures.value);
var b=Number(form.b.value);
var x=f-b
form.ans4.value=toDec(x,decPlac);
}

function x_plus_k(form){
var x=Number(form.ans4.value);
var k=Number(form.nationalfutures2.value);
var y=x+k
form.nationalfutures6.value=toDec(y,decPlac);
}
function k_minus_l(form){
var k=Number(form.nationalfutures2.value);
var l=Number(form.nationalfutures3.value);
var u=k-l
form.ans5.value=toDec(u,decPlac);
}

function f_minus_u(form){
var f=Number(form.nationalfutures.value);
var u=Number(form.ans5.value)
var v=f-u
form.nationalfutures7.value=toDec(v,decPlac);
}