// JavaScript Document
  function checkFeedBack() {
      if(document.getElementById('feedback').value == '' ) {
       document.getElementById('error').innerHTML = 'You did not write anything!';
        return false;
      }
      else {document.getElementById('error').innerHTML = ''; return true;}
    }
  window.onload = function() { 
  
  document.getElementById('softwareFeedback').onsubmit = checkFeedBack; 
  document.getElementById('feedback').focus(); 
  
  }