ext.net TreePanel 左边选择右边加载jsp页面

[qq_19747643]

我的源码：
<form id="form1" runat="server">
<ext:ResourceManager runat="server" />
<ext:Panel
runat="server"
Width="1600"
Height="700"
Layout="Border">
<Items>
<ext:TreePanel
ID="TreePanel1"
runat="server"
EnableDrag="true"
DDGroup="tree2div"
Region="West"
Split="true"
MarginSpec="5 0 5 5"
Width="200"
Title="Tree"
AutoScroll="true"
Collapsible="true">
<Store>
<ext:TreeStore runat="server">
<Model>
<ext:Model runat="server">
<Fields>
<ext:ModelField Name="data" />
</Fields>
</ext:Model>
</Model>
</ext:TreeStore>
</Store>
<Root>
<ext:Node Text="经销存系统" Expanded="true">
<Children>
<ext:Node Text="商品管理">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 1 data" Mode="Value" />
</CustomAttributes>
<Children>
<ext:Node Text="商品详细信息" Leaf="true">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 1 Child 1 data" Mode="Value" />
</CustomAttributes>
</ext:Node>
</Children>
</ext:Node>
<ext:Node Text="采购管理">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 2 data" Mode="Value" />
</CustomAttributes>
<Children>
<ext:Node Text="新增采购单" Leaf="true">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 2 Child 2 data" Mode="Value" />
</CustomAttributes>
</ext:Node>
</Children>
</ext:Node>
<ext:Node Text="订单管理">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Leaf 1 data" Mode="Value" />
</CustomAttributes>
<Children>
<ext:Node Text="新增订单" Leaf="True">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 2 Child 2 data" Mode="Value" />
</CustomAttributes>
</ext:Node>
</Children>
</ext:Node>

<ext:Node Text="库存管理">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 1 data" Mode="Value" />
</CustomAttributes>
<Children>
<ext:Node Text="库存查询" Leaf="true">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 1 Child 1 data" Mode="Value" />
</CustomAttributes>
</ext:Node>
</Children>
</ext:Node>

<ext:Node Text="员工管理">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 1 data" Mode="Value" />
</CustomAttributes>
<Children>

<ext:Node Text="员工基本信息" Leaf="true">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 1 Child 1 data" Mode="Value" />
</CustomAttributes>
</ext:Node>
</Children>
</ext:Node>

<ext:Node Text="出入库管理">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 1 data" Mode="Value" />
</CustomAttributes>
<Children>

<ext:Node Text="出入库查询" Leaf="true">
<CustomAttributes>
<ext:ConfigItem Name="data" Value="Folder 1 Child 1 data" Mode="Value" />
</CustomAttributes>
</ext:Node>
</Children>
</ext:Node>
</Children>
</ext:Node>

</Root>

<View>
<ext:TreeView runat="server">
<Plugins>
<ext:TreeViewDragDrop runat="server" EnableDrop="false" DragGroup="tree2div" />
</Plugins>
</ext:TreeView>
</View>
</ext:TreePanel>

<ext:Panel
ID="panel1"
runat="server"
Title="Target"
Region="Center"
MarginSpec="5 5 5 0">
<Content>

<div id="drop-target" style="border: 1px silver solid; margin: 20px; padding: 8px; height: 500px">
</div>

</Content>
</ext:Panel>
</Items>
</ext:Panel>

<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</form>

效果图：