magnific-popup/libs/jquery-loader.js

Lightbox and modal dialog plugin. Can display inline HTML, iframes (YouTube video, Vimeo, Google Maps), or an image gallery. Animation effects are added with CSS3 transitions. For jQuery or Zepto.

(function() {
  // Default to the local version.
  var path = '../libs/jquery/jquery.js';
  // Get any jquery=___ param from the query string.
  var jqversion = location.search.match(/[?&]jquery=(.*?)(?=&|$)/);
  // If a version was specified, use that version from code.jquery.com.
  if (jqversion) {
    path = 'http://code.jquery.com/jquery-' + jqversion[1] + '.js';
  }
  // This is the only time I'll ever use document.write, I promise!
  document.write('<script src="' + path + '"></script>');
}());