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();
        };
    };