js随意写的一个tab选项卡，VS中调试各种有关问题

js随意写的一个tab选项卡，VS中调试各种问题
前台aspx代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Manage.aspx.cs" Inherits="Manage_Manage" %>

<script language="javascript" src="../Js/iframe.js"  type="text/javascript"></script>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

    <form id="form1" runat="server">

    <table style="border-width: 0.5px; border-style: groove; width:100%; height:auto">

        <tr>

            <td style="width:200px;text-align:left; vertical-align:top">

                <div id="noticediv" style="background-color: #666666;border-color: #C0C0C0; border-width: 1px; height:50px; border-top-style: groove; border-bottom-style: groove; border-left-style: groove;text-align:center; padding-top:16px; color:White;" 

                    onclick='tabclick(["noticediv","userdiv","setdiv"],0);'>公&nbsp; 告</div>

                <div id="userdiv" style="background-color: #666666;border-color: #C0C0C0; border-width: 1px; height:50px; border-top-style: groove; border-bottom-style: groove; border-left-style: groove;text-align:center;padding-top:16px; color:White;"

                    onclick='tabclick(["noticediv","userdiv","setdiv"],1);'>用&nbsp; 户</div>

                <div id="setdiv" style="background-color: #666666;border-color: #C0C0C0; border-width: 1px; height:50px; border-top-style: groove; border-bottom-style: groove; border-left-style: groove; text-align:center;padding-top:16px; color:White;"

                    onclick='tabclick(["noticediv","userdiv","setdiv"],2);'>设&nbsp; 定</div>

            </td>

            <td style="min-height:300px; text-align:left; vertical-align:top; height:100%">

                <iframe id="showframe" scrolling="auto" onload='autoframe("showframe");' frameborder="0" marginheight="0" marginwidth="0" width="100%" height="100%" src=""></iframe>

            </td>

        </tr>

    </table>

    </form>

</body>

</html>

调用的js中：

function tabclick(tabs, stab) {

    var tem;

    for (i = 0; i < tabs.length; i++) 

    {

        tem = document.getElementById(tabs[i]);

        if (tem) 

        {

            if (i != stab) 

            {

                tem.style.backgroundColor = "#666666";

                tem.style.color = "white";

            }

            else 

            {

                tem.style.backgroundColor = "white";

                tem.style.color = "#666666";

            }

        }

    }

}