useful.html

<script style="text/javascript">
$(document).ready(function(){
  // resize bg
  $(window).resize(function(){
    $('#wrap').css('height', $(window).height()-55)
  }).trigger('resize');

  // scroll down animation
  $('.down-btn').click(function(){
    $('html, body').animate({
      scrollTop: $(".home_below").offset().top
    }, 1000);
    return false;
  });
});
</script>

<style type="text/css">
  #wrap {
    background-color: #f2f3f5;
    background-image: url('assets/hands-1500x1000.jpg');
    background-repeat:no-repeat;
    background-position:center;
    background-size:cover;
  }
</style>

- Page Refresh
<script>
  var timeout = setTimeout("location.reload(true);",20000);
  function resetTimeout() {
    clearTimeout(timeout);
    timeout = setTimeout("location.reload(true);",20000);
  }
</script>

regex
request.url.match(/[?].*/)