var d = document;
var safari = (navigator.userAgent.toLowerCase().indexOf('safari') != -1) ? true : false;
var gebtn = function (parEl, child) { return parEl.getElementsByTagName(child); };
onload = function () {

    var body = gebtn(d, 'body')[0];
    body.className = body.className && body.className != '' ? body.className + ' has-js' : 'has-js';

    if (!d.getElementById || !d.createTextNode) return;
    var ls = gebtn(d, 'label');
    for (var i = 0; i < ls.length; i++) {
        var l = ls[i];
        if (l.className.indexOf('label_') == -1) continue;
        var inp = gebtn(l, 'input')[0];
        if (l.className == 'label_check') {
            l.className = (safari && inp.checked == true || inp.checked) ? 'label_check c_on' : 'label_check c_off';
            l.onclick = check_it;
        };
        if (l.className == 'label_radio') {
            l.className = (safari && inp.checked == true || inp.checked) ? 'label_radio r_on' : 'label_radio r_off';
            l.onclick = turn_radio;
        };
    };
};
var check_it = function () {
    var inp = gebtn(this, 'input')[0];
    if (this.className == 'label_check c_off' || (!safari && inp.checked)) {
        this.className = 'label_check c_on';
        if (safari) inp.click();
    } else {
        this.className = 'label_check c_off';
        if (safari) inp.click();
    };
};
var turn_radio = function () {
    var inp = gebtn(this, 'input')[0];
    if (this.className == 'label_radio r_off' || inp.checked) {
        var ls = gebtn(this.parentNode, 'label');
        for (var i = 0; i < ls.length; i++) {
            var l = ls[i];
            if (l.className.indexOf('label_radio') == -1) continue;
            l.className = 'label_radio r_off';
        };
        this.className = 'label_radio r_on';
        if (safari) inp.click();
    } else {
        this.className = 'label_radio r_off';
        if (safari) inp.click();
    };
};