Team:Calgary/JS

// When the user scrolls down 20px from the top of the document, show the button window.onscroll = function() {scrollFunction()};

function scrollFunction() {

   if (document.body.scrollTop > 20 || document.documentElement.scrollTop > 20) {
       document.getElementById("myBtn").style.display = "block";
   } else {
       document.getElementById("myBtn").style.display = "none";
   }

}

// When the user clicks on the button, scroll to the top of the document function topFunction() {

   document.body.scrollTop = 0;
   document.documentElement.scrollTop = 0;

}