var us_msg = {missing: "Не задано обязательное поле: \"%s\"", invalid: "Недопустимое значение поля: \"%s\"", email_or_phone: "Не задан ни email, ни телефон", no_list_ids: "Не выбрано ни одного списка рассылки"};
function us_onLoadImpl() {
us_autodetectCharset();
}
var us_onLoadOld = null;
var us_onLoadCalled = false;

function us_onLoad() {
us_onLoadImpl();
us_onLoadCalled = true;
if (us_onLoadOld) {
us_onLoadOld();
}
}

us_onLoadOld = window.onload;
window.onload = us_onLoad;

function us_autodetectCharset() {
var d = document;
var f = d.getElementById('us_form');
var ee = f.getElementsByTagName('input');
for (var i = 0;  i < ee.length;  i++) {
var e = ee[i];
if (e.getAttribute('name') == 'charset') {
if (e.value == '') {
// http://stackoverflow.com/questions/318831
e.value = d.characterSet ? d.characterSet : d.charset;
}
return;
}
}
}

function us_onSubmit() {
if (!us_onLoadCalled) {
alert('us_onLoad() has not been called')
return false;
}

function trim(s) {
return s == null ? '' : s.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
}

var d = document;
var f = d.getElementById('us_form');
if (!f) {
alert('Internal error: form not found.');
return false;
}
var ee, i, e, n, v, r, k, b1, b2;
var hasEmail = false;
var hasPhone = false;

ee = f.getElementsByTagName('input');
for (i = 0;  i < ee.length;  i++) {
e = ee[i];
n = e.getAttribute('name');
if (!n || e.getAttribute('type') != 'text') {
continue;
}

v = trim(e.value);
if (v == '') {
k = e.getAttribute('_required');
if (k == '1') {
alert(us_msg['missing'].replace('%s', e.getAttribute('_label')));
e.focus();
return false;
}
continue;
}

if (n == 'email') {
hasEmail = true;
} else if (n == 'phone') {
hasPhone = true;
}
k = e.getAttribute('_validator');
r = null;
switch (k) {
case null:
case '':
break;
case 'email':
// TODO Provide regexps from PHP code (add getEmailValidationRegexp_forJavascript() to functions.php).
r = /^[a-zA-Z0-9_+=-]+[a-zA-Z0-9\._+=-]*@[a-zA-Z0-9][a-zA-Z0-9-]*(\.[a-zA-Z0-9]([a-zA-Z0-9-]+))*\.([a-zA-Z]{2,6})$/;
break;
case 'phone':
r = /^[\d +()\-]{7,32}$/;
break;
case 'float':
r = /^[+\-]?\d+(\.\d+)?$/;
break;
default:
alert('Internal error: unknown validator "' + k + '"');
e.focus();
return false;
}
if (r && !r.test(v)) {
alert(us_msg['invalid'].replace('%s', e.getAttribute('_label')));
e.focus();
return false;
}
}

if (!hasEmail && !hasPhone) {
alert(us_msg['email_or_phone']);
return false;
}

ee = f.getElementsByTagName('input');
b1 = false;
b2 = false;
for (i = 0;  i < ee.length;  i++) {
e = ee[i];
if (e.getAttribute('name') != 'list_ids[]') {
continue;
}
b1 = true;
if (e.checked) {
b2 = true;
break;
}
}
if (b1 && !b2) {
alert(us_msg['no_list_ids']);
return false;
}

return true;
}