if (navigator.userAgent.indexOf('Safari') != -1) {
    labels = document.getElementsByTagName('label');
    YAHOO.util.Event.addListener(labels, 'click', _fixLabels);
    function _fixLabels(ev) {
        var tar = YAHOO.util.Event.getTarget(ev, 1);
        var idName = tar.getAttribute('for');
        var id = YAHOO.util.Dom.get(idName);
        if (id) { id.click(); }
    }
}