window.onload = function() {
  document.getElementById('no-script').style.display = 'none';
  document.getElementById('js-show').style.display = 'block';
  document.getElementById('js-show').onclick = function() {
    checkform();
  }
  var empty = 0;
  var required = new Array(document.getElementById('Name'),document.getElementById('Email'),document.getElementById('Nachricht'));
    for (var i=0;i<required.length;i++) {
        required[i].onkeyup = function() { 
          this.style.border = '1px #A5ACB2 solid';
          empty = 0;
        }
    }

  function checkform() {
    for (var i=0;i<required.length;i++) {
      if (required[i].value == '') {
        required[i].style.border = '3px red solid';
        empty = 1;
      }
    }
    if (empty == 1) { 
      return false;
    }
    else {
      document.getElementById('kform').submit();
    }
  }
}