Javascript - Email validate function (regex based)

gistfile1.js

// Returns true or false wether or not the email passed as a parameter passes the test
function validateEmail (email) {
  var emailRegex = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
  return emailRegex.test(email);
}