Javascript runs on an HTML Page but Not on WordPress

I installed a javascript on an HTML page and it works perfectly – you can see it here – https://source-pro.org/PPT-Calc-Windows.html

The same code when added to a WordPress Page utilizing a Custom Field does not work – you can see it here – https://source-pro.org/inches-to-pixels-and-saving/

This is the javascript

<script type="text/javascript">
var vals = [1/3, 2/3, 3/3, 1/4, 2/4, 3/4, 4/4];
var tmp = 0;
    str += '\nValue display using .toFixed(3) then truncates\n';
for (var i=0; i<vals.length; i++) {
  tmp = vals[i].toFixed(3);
  str += tmp.substr(0,tmp.length-1)+'\n';
}

document.getElementById('debug').innerHTML = str;

</script>

<script type="text/javascript">
function compute_p (obj) {
with (Math) {
u4=eval(obj.einh.value);
d4=eval(obj.cmheight1.value);
d5=eval(obj.cmwidth1.value);
d8=eval(obj.cmresolution.value);
if (obj.einh[1].checked) {
h5=d4*d8;
h6=d5*d8;
}
else {
h5=(d4/2.54)*d8;
h6=(d5/2.54)*d8;
}
s1=((h5*h6*3)/1024)/1024;
s2=round(h5)*round(h6);
function rounder(x,stellen) {
return (Math.round(x*Math.pow(10,stellen)))/Math.pow(10,stellen)
}
obj.res5.value =round(h5);
obj.res6.value =round(h6);
obj.sres.value =rounder(s1,2);
obj.sres_pix.value =round(s2);
}
}
function compute (obj) {
with (Math) {
d1=eval(obj.height1.value);
d2=eval(obj.width1.value);
d3=eval(obj.resolution.value=96);
h1=(d1/d3)*2.54;
h2=(d2/d3)*2.54;
h3=d1/d3;
h4=d2/d3;
tmp = h3.toFixed(4);
obj.res3.value = tmp.substr(0,tmp.length-1)+'\n';
tmp = h4.toFixed(4);
obj.res4.value = tmp.substr(0,tmp.length-1)+'\n';
}
}
</script>

Can anyone see anything that would cause this code to fail when in WordPress?

I’ve tried disabling all plugins – not effect.

I’m stumped.

Any suggestions?