各位大哥!TreeView的问题 要跪了我!!!
树:
   <iewc:TreeView ID="tv2" SelectedStyle="color:#e8f4ff" runat="server" Width="190px"
    Height="100%" BorderColor="White" SystemImagesPath="../../../webctrl_client/1_0/treeimages/"
    SelectExpands="True"BorderWidth="0px">                                                                      
         <iewc:TreeNode  Text="资产信息" Expanded="True">
             <iewc:TreeNode NavigateUrl="../../MRR_networkDevice/networkDevice_Index.aspx"   
            Text="网络设备" Expanded="True" Target="MMR_main" >
             </iewc:TreeNode>                                                                       
             <iewc:TreeNode Text="服务器设备" Expanded="True"   
              NavigateUrl="../../MMR_serverDevice/serverDevice.aspx"  Target="MMR_main">
             </iewc:TreeNode>                                                                   
             <iewc:TreeNode NavigateUrl="../../MMR_SafetyDevice/SafetyDevice_Index.aspx"   
             Text="信息安全设备" Expanded="True" Target="MMR_main">
             </iewc:TreeNode>                                                                      
             <iewc:TreeNode NavigateUrl="../../MMR_AppSystemDevice/AppSystemDevice_Index.aspx"   
              Text="应用系统" Expanded="True" Target="MMR_main">
             </iewc:TreeNode>                                                                      
             <iewc:TreeNode NavigateUrl="../MMR_baseDevice/baseDevice.aspx"  
              Text="基础设施" Expanded="True" Target="MMR_main">
             </iewc:TreeNode>                                                                      
             <iewc:TreeNode NavigateUrl="../../MMR_OtherDevice/OtherDevice_Index.aspx"   
              Text="其他" Expanded="True" Target="MMR_main">
             </iewc:TreeNode>
          </iewc:TreeNode>
          ··········(省略后面一个意思)
  </iewc:TreeView>
框架:
<frameset  cols="178,10,*" rows="*" border="0" framespacing="0" frameborder="0"  id="thisFrame" >
	<frameset>
		<frame name="LeftFrame" src="_left_top.aspx" frameborder="0" border="0" framespacing="0" >
		<frame name="middleframe" src='t_1.htm' scrolling='no' frameborder='NO' >
		<frame id="MMR_main" src="_main.aspx"  scrolling="auto" 
                 frameborder="0" border="0"framespacing="0">
	<noframes>
		<body bgcolor="#FFFFFF">
		  <table width="100" border="4" align="left" cellpadding="10" cellspacing="2" height="100%">
		     <tr>
			 <td>
                            <p align="center">
                                 <font color="#0000FF">浏览器功能支持限制</font>
                            </p>
			   <p>    非常抱歉,您的浏览器不支持框架模式,