Copy text using javascript

</script>
<script>
function onSubmitClick() {
  var box1 = document.getElementById('box1');
  var box2 = document.getElementById('box2');
  box2.value = box1.value;
}
</script>

<textarea id='box1'></textarea>
<textarea id='box2'></textarea>
<button onclick='onSubmitClick(); return false'>Click Me</button>