<!-- Thomas Insulation Corporation - Outside Diameter Javascript Calculator-->

<!-- Begin
function circle(form,changed) {
with (Math) {
var diameter = form.diameter.value;
var circumference = form.circumference.value;

if (changed == "circumference") {
diameter = Math.round((circumference/PI)*10000)/10000; //provides the diameter result  //10000 rounds to 4 decimal places
       }
form.diameter.value = diameter;
form.circumference.value = circumference;
  }
}
var toDegrees = 360 / (Math.PI * 2);
var toRadians = (Math.PI * 2) / 360;

//  End -->