For the love of God I am not getting this easy code to work! It is always alerting out "null" which means that the string does not match the expression.
var pattern = "^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$";
function isEmailAddress(str) {
str = "
[email protected]";
alert(str.match(pattern));
return str.match(pattern);
}