function focusTab(pe, cn, e) {
    // pe = 菜单父容器名称, cn = 内容父容器名称, e = 事件元素
    var el = document.getElementById(pe).childNodes;

    var el2 = document.getElementById(cn).childNodes;
    
    //var ee = document.getElementById('Channel' + te).parentNode.childNodes;
    for (var i = 0; i < el.length; i++) {
        if (el[i].id == e.id) {
            el[i].className = "current";
            el2[i].style.display = "block";
        }
        else {
            el[i].className = "";
            el2[i].style.display = "none";
        }
    }

    //var ee = document.getElementById('Channel' + te).parentNode.childNodes;
    
    //alert(ee.length);
    
}