old_contents: 
  // [ 2.54, // inches to cm
  //   .394, // cm to inches
  //   29.574, //fluid oz to ml
  //   0.0338135, //ml to fl
  //   1.6, //miles to km
  //   .625, //km to miles
  //   .455, // pounds to kg
  //   2.2, // kg to pounds
  //   0.907185,//std shit tone
  //   1.10231,//metric shit ton
  // ]
  
  var valArray = [ 'inches',
  'centimeters',
  'ounces',
  'milliliters',
  'miles',
  'kilometers',
  'pounds',
  'kilograms',
  'standard',
  'metric'];
  
  function buttonHandler(e) {
    var targetEl = e.target;
    e.preventDefault();
  
    converter( valArray.indexOf(document.getElementById('select-conv').value));
    console.log('Calling Conversion function');
  
  };
  
  document.getElementById('convert-button').addEventListener('click', buttonHandler, false);
  
  var conversionNumbers = [
    2.54, // inches to cm
    .394, // cm to inches
    29.574, //fluid oz to ml
    0.0338135, //ml to fl
    1.6, //miles to km
    .625, //km to miles
    .455, // pounds to kg
    2.2, // kg to pounds
    0.907185,//std shit tone
    1.10231,//metric shit ton
  ];
  
  var userInput = document.getElementById('enter-number').value;
  
  function converter(userInput, rate){
    'use strict';
    var output = rate * userInput;
    return output;
  };
  
new_contents: 
  // [ 2.54, // inches to cm
  //   .394, // cm to inches
  //   29.574, //fluid oz to ml
  //   0.0338135, //ml to fl
  //   1.6, //miles to km
  //   .625, //km to miles
  //   .455, // pounds to kg
  //   2.2, // kg to pounds
  //   0.907185,//std shit tone
  //   1.10231,//metric shit ton
  // ]
  
  var valArray = [ 'inches',
  'centimeters',
  'ounces',
  'milliliters',
  'miles',
  'kilometers',
  'pounds',
  'kilograms',
  'standard',
  'metric'];
  
  function buttonHandler(e) {
    var targetEl = e.target;
    e.preventDefault();
  
    converter( valArray.indexOf(document.getElementById('select-conv').value));
    console.log('Calling Conversion function');
  
  };
  
  document.getElementById('convert-button').addEventListener('click', buttonHandler, false);
  
  var conversionNumbers = [
    2.54, // inches to cm
    .394, // cm to inches
    29.574, //fluid oz to ml
    0.0338135, //ml to fl
    1.6, //miles to km
    .625, //km to miles
    .455, // pounds to kg
    2.2, // kg to pounds
    0.907185,//std shit tone
    1.10231,//metric shit ton
  ];
  
  var userInput = document.getElementById('enter-number').value;
  var post = document.getElementById('post-results');
  
  function converter(userInput, rate){
    'use strict';
    var output = rate * userInput;
    var li = document.createElement('li');
    li.textContent = output;
    post.appendChild(li);
  }
  
subject: write calculations to page