//subject:Format Check
//createDate:2010-10-30
//Author:Lucifer

function checkEmail(umail) {
    if (umail.length == 0) return true;
    var re = /^[\-!#\$%& '\*\+\\\.\/0-9=\?A-Z\^_`a-z{|}~]+@[\-!#\$%& '\*\+\\\.\/0-9=\?A-Z\^_`a-z{|}~]+(\.[\-!#\$%& '\*\+\\\.\/0-9=\?A-Z\^_`a-z{|}~]+)+$/;
    if (re.test(umail))
        return true;
    return false;
}