(function(env) {

function browserVersion(matchFn) {
  var userAgent = jasmine.getGlobal().navigator.userAgent;
  if (!userAgent) { return void 0; }

  var match = matchFn(userAgent);

  return match ? parseFloat(match[1]) : void 0;
}

env.ieVersion = browserVersion(function(userAgent) {
  return /MSIE ([0-9]{1,}[\.0-9]{0,})/.exec(userAgent);
});

env.safariVersion = browserVersion(function(userAgent) {
  return /Safari/.exec(userAgent) && /Version\/([0-9]{0,})/.exec(userAgent);
});

env.firefoxVersion = browserVersion(function(userAgent) {
  return /Firefox\/([0-9]{0,})/.exec(userAgent);
});

})(jasmine.getEnv());