Issue #3007950 by ron_s: Improper version checking causes CKEditor 4.10.1 to break inserting images

      ckeditorInstance.insertElement(editorElement);

      // Initialize widget on our html if possible.

      if (parseFloat(CKEDITOR.version) >= 4.3 && hasWidgetSupport) {

      if (Drupal.settings.ckeditor.plugins['media'].compareVersions(CKEDITOR.version, '4.3') >= 0 && hasWidgetSupport) {

        ckeditorInstance.widgets.initOn( editorElement, 'mediabox' );

        // Also support the image2 plugin.

      }

    },

    /**

     * Compare versions of CKEditor to determine if one version

     * is less than, greater than, or equal to another.

     *

     * @param a

     *   A first instance of CKEditor.

     * @param b

     *   A second instance of CKEditor.

     * @return

     *   A number less than, greater than, or equal to zero.

     *   - If a < b, a number less than zero is returned.

     *   - If a > b, a number greater than zero is return.

     *   - If a = b, the value of 0 is returned.

     */

    compareVersions: function (a, b) {

      var i, diff;

      var regExStrip0 = /(\.0+)+$/;

      var segmentsA = a.replace(regExStrip0, '').split('.');

      var segmentsB = b.replace(regExStrip0, '').split('.');

      var l = Math.min(segmentsA.length, segmentsB.length);

      for (i = 0; i < l; i++) {

        diff = parseInt(segmentsA[i], 10) - parseInt(segmentsB[i], 10);

        if (diff) {

          return diff;

        }

      }

      return segmentsA.length - segmentsB.length;

    },

    /**

     * Forces custom attributes into the class field of the specified image.

     *