text: /**
   * detect IE
   * returns version of IE or false, if browser is not Internet Explorer
   */
  var detectie = function(win) {
      if (!win) {
          win = window;
      }
      var ua = win.navigator.userAgent;
  
      var msie = ua.indexOf('MSIE ');
      if (msie > 0) {
          // IE 10 or older => return version number
          return parseInt(ua.substring(msie + 5, ua.indexOf('.', msie)), 10);
      }
  
      var trident = ua.indexOf('Trident/');
      if (trident > 0) {
          // IE 11 => return version number
          var rv = ua.indexOf('rv:');
          return parseInt(ua.substring(rv + 3, ua.indexOf('.', rv)), 10);
      }
  
      var edge = ua.indexOf('Edge/');
      if (edge > 0) {
         // IE 12 => return version number
         return parseInt(ua.substring(edge + 5, ua.indexOf('.', edge)), 10);
      }
      // other browser
      return false;
  }
  
  module.exports = detectie;
  