权限导航隐藏问题~~

string strFlag = Session["UserFlag"].ToString();
             string[] qxflag = strFlag.Split('|');
             for (int i = 0; i < qxflag.Length; i++)
             {
                 if (qxflag[i] == "1")
                 {
                     Falg += qxflag[i].ToString();
                 }
                 else
                 {
                     Falg += qxflag[i].ToString();
                 }
             }<div class="RootMenu" id="Falg9" runat="server">
                <!--合作媒体 -->
                
                    <div class="RMDESC" title="展开菜单" id="r6" onclick="showMenu('root6',11)">
                        合作媒体</div>
                    <ul id='root6' style="display: none">
                        <li><a target="ManagerMain" href='Manage_Link.aspx' onclick="show(15,2)">连接管理</a></li>
                        <li><a target="ManagerMain" href='AddEdit_Link.aspx' onclick="show(15,2)">添加连接</a></li>
                    </ul>
                
                <!--合作媒体 -->
                </div>这样怎么把Falg9 隐藏啊~~，UserFlag是 01010101这样的~
自己都说不清楚了，有经验的兄弟给个意见~