// JavaScript Document

function  calculateBMI() {
  var weight = eval(document.form.weight.value)
  var height = eval(document.form.height.value)
  var height2 = height / 100
  var BMI = weight  / (height2 * height2)
  document.form.BodyMassIndex.value=custRound(BMI,1);
}

function custRound(x,places) {
  return (Math.round(x*Math.pow(10,places)))/Math.pow(10,places)
}