function setTab(/*string*/name, /*int*/itemCnt, /*int*/curItem, /**/classHide, /**/classShow) {
    for (i = 1; i <= itemCnt; i++) {
        eval("document.getElementById('tab_" + name + "_" + i + "').className='" + classHide + "'");
    }
    eval("document.getElementById('tab_" + name + "_" + curItem + "').className='" + classShow + "'");

    for (i = 1; i <= itemCnt; i++) {
        eval("ele_hide = document.getElementById('con_" + name + "_" + i + "')");
        if (ele_hide) ele_hide.style.display = "none";
    }
    eval("ele_play = document.getElementById('con_" + name + "_" + curItem + "')");
    if (ele_play) ele_play.style.display = "block";
}