(function() {

  var loading = {};

  function splitCallback(cont, n) {

    var countDown = n;

    return function() { if (--countDown == 0) cont(); };

  }

  function ensureDeps(mode, cont) {

    var deps = CodeMirror.modes[mode].dependencies;

    if (!deps) return cont();

    var missing = [];

    for (var i = 0; i < deps.length; ++i) {

      if (!CodeMirror.modes.hasOwnProperty(deps[i]))

        missing.push(deps[i]);

    }

    if (!missing.length) return cont();

    var split = splitCallback(cont, missing.length);

    for (var i = 0; i < missing.length; ++i)

      CodeMirror.requireMode(missing[i], split);

  }

  CodeMirror.requireMode = function(mode, cont) {

    if (typeof mode != "string") mode = mode.mode;

    if (CodeMirror.modes.hasOwnProperty(mode)) return ensureDeps(mode, cont);

    if (loading.hasOwnProperty(mode)) return loading[mode].push(cont);

    var script = document.createElement("script");

    script.src = CodeMirror.modeURL.replace(/%N/g, mode);

    var others = document.getElementsByTagName("script")[0];

    others.parentNode.insertBefore(script, others);

    var list = loading[mode] = [cont];

    var count = 0, poll = setInterval(function() {

      if (++count > 100) return clearInterval(poll);

      if (CodeMirror.modes.hasOwnProperty(mode)) {

        clearInterval(poll);

        loading[mode] = null;

        ensureDeps(mode, function() {

          for (var i = 0; i < list.length; ++i) list[i]();

        });

      }

    }, 200);

  };

  CodeMirror.autoLoadMode = function(instance, mode) {

    if (!CodeMirror.modes.hasOwnProperty(mode))

      CodeMirror.requireMode(mode, function() {

        instance.setOption("mode", instance.getOption("mode"));

      });

    instance.setOption("mode", mode.mime);

  };