text: // Header menu bar sticker
  window.onscroll = function() {sticker()};
  var header = document.getElementById("header");
  var sticky = header.offsetTop;
  
  function sticker() {
    if (window.pageYOffset > sticky) {
      header.classList.add("sticky");
    } else {
      header.classList.remove("sticky");
    }
  }
  
  // Tab support in TextArea
  var textareas = document.getElementsByTagName('textarea');
  var count = textareas.length;
  for(var i=0;i<count;i++){
      textareas[i].onkeydown = function(e){
          if(e.keyCode==9 || e.which==9){
              e.preventDefault();
              var s = this.selectionStart;
              this.value = this.value.substring(0,this.selectionStart) + "\t" + this.value.substring(this.selectionEnd);
              this.selectionEnd = s+1; 
          }
      }
  }