Tab切换栏

// Tab切换栏
function setTab(name, m, n) {
    for (var i = 1; i <= n; i++) {
        var menu = document.getElementById(name + i);
        var showDiv = document.getElementById("cont_" + name + "_" + i);
        menu.className = i == m ? "on" : "";
        showDiv.style.display = i == m ? "block" : "none";
    }
}

调用的时候这样调用： onmousedown='setTab("two",2,3)'