function ismail(e){var exclude=/[^@\-\.\w]|^[_@\.\-]|[\._\-]{2}|[@\.]{2}|(@)[^@]*\1/;var check=/@[\w\-]+\./;var checkend=/\.[a-zA-Z]{2,3}$/;if(((e.search(exclude) != -1)||(e.search(check)) == -1)||(e.search(checkend) == -1)){return false;}else {return true;}}