// JavaScript Document
function isValidEmail(str) {
	var reg1str = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)";
	var reg2str = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$";
	var reg1 = new RegExp(reg1str);
	var reg2 = new RegExp(reg2str);
	if (!reg1.test(str) && reg2.test(str)) return true;

	return false;
}