on id="continue">Start Test</button>
    <div id="log"></div>
    </body>
    <script>
        var continueBtn = document.getElementById("continue");

        function continueTest() {
          nextStep(function(instructionText) {
            var instruction = document.getElementById("instruction");
            continueBtn.innerText = "Continue";
            instruction.innerText = instructionText;
          });
        }

        continueBtn.addEventListener('click', continueTest);

        var didGetScro