function nTabs(thisObj, Num) {
    if (thisObj.className == "active") return;
    var tabObj = thisObj.parentNode.id;
    var tabList = document.getElementById(tabObj).getElementsByTagName("li");
    for (i = 0; i < tabList.length; i++) {
        if (i == Num) {
            thisObj.className = "active";
            document.getElementById(tabObj + "_Content" + i).style.display = "block";
        } else {
            tabList[i].className = "normal";
            document.getElementById(tabObj + "_Content" + i).style.display = "none";
        }
    }
}
function qiehuan(num) {
    for (var id = 0; id <= 11; id++) {
        if (id == num) { document.getElementById("qh_con" + id).style.display = "block"; document.getElementById("mynav" + id).className = "nav_on"; }
        else { document.getElementById("qh_con" + id).style.display = "none"; document.getElementById("mynav" + id).className = ""; } 
    } 
}