nobuti

@mixin image-2x($image, $width, $height) {
  @media (min--moz-device-pixel-ratio: 1.3),
         (-o-min-device-pixel-ratio: 2.6/2),
         (-webkit-min-device-pixel-ratio: 1.3),
         (min-device-pixel-ratio: 1.3),
         (min-resolution: 1.3dppx) {

    background-image: image-url($image);
    background-size: $width $height;
  }

nobuti

function loadScript(path, fn) {
  var el = document.createElement('script'),
      loaded = 0,
      onreadystatechange = 'onreadystatechange',
      readyState = 'readyState';

  el.onload = el.onerror = el[onreadystatechange] = function () {
    if (loaded || (el[readyState] && !(/^c|loade/.test(el[readyState])))) return;
    el.onload = el.onerror = el[onreadystatechange] = null;
    loaded = 1;