function switchOnTab(tab) {
        var li = $(tab).parent();
        var ul = $(li).parent();

        var classNames = $(li).attr('class').split(' ');
        var childsAll = $(ul).children();

        var current_class_name = '';

        current_class_name = classNames[0];

        childsAll.each(function(n) {
            var first_class_a = $(this).attr('class').split(' ');
            var first_class = first_class_a[0];
            if (first_class!=current_class_name) {
                $(this).removeClass(first_class+'_active');
                var dv = document.getElementById(first_class);
                dv.style.display='none';
            }
        });
        var dv = document.getElementById(current_class_name);
        dv.style.display = '';
        $(li).addClass(current_class_name+'_active');
        return true;
    }

    function switchSubTab(at) {
        var uid = $(at).attr('rel');
        var ul = $(at).parent();
        ul = $(ul).parent();
        var childsAll = $(ul).children();
        childsAll.each(function(n) {
            var childrens = $(this).children();
            var a2 = childrens[0];
            var uid2 = $(a2).attr('rel');
            if (uid2 != uid) {
                $(a2).removeClass('tabs_submenu_active');
                var dv = document.getElementById(uid2);
                dv.style.display = 'none';
            } else $(a2).addClass('tabs_submenu_active');
        });
        var dv = document.getElementById(uid);
        dv.style.display = '';
        return true;
    }