function isEmailCorrect(email) {
	// Checks format of email by regexp 
	var re_email = /^[-a-z0-9_\.]+@{1}[-a-z0-9\.]+\.{1}[-a-z0-9]+$/i;
	return email.match(re_email);
}

function isPhoneNumber(number) {
	// Checks phone number formats
	var clear_number = number.replace(/\s/g, ""); // trim all spaces
	var re_phone = /^\+*[0-9]+$/i;
	return clear_number.match(re_phone);
}