function checkEmailFormat(email) {
	email = trim(email);
	reg = new RegExp("","i");
	reg = /^[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+@[-!#$%&\'*+\\/0-9=?A-Z^_`a-z{|}~]+\.[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+$/;
	if (reg.test(email)) {
		return true;
	} else {
		return false;
	}
}