sonnyp

var hideScrollbars = function(aElement) {
  if (aElement.clientWidth === aElement.offsetWidth)
    return;

  aElement.style.overflow = 'hidden';

  if ('onwheel' in scrollbox) {
    scrollbox.addEventListener('wheel', function(e) {
      this.scrollTop += e.deltaY;
      this.scrollLeft += e.deltaX;

sonnyp

var whenDocumentIsReady = function(callback) {
  if (document.readyState !== 'loading')
    callback.call(document);
  else
    document.addEventListener('DOMContentLoaded', callback);
};

sonnyp

function fileInputSupport() {
  var input = document.createElement('input');
  input.type = 'file';
  return !input.disabled;
}