function emailVerification(anEmailAdress){
	var emailAdressRegExp = /^[a-z0-9_\.\-]+\@(?:[0-9a-z][a-z0-9\-]+\.)+[a-z]{2,4}$/i;
	if(emailAdressRegExp.test(anEmailAdress)){
		return true;
	}
	else{
		return false;
	}
}