ext.net2.0 GridPanel 兑现自动换行

参考加入以下代码即可实现：   

 <style type="text/css">
        .x-grid3-row td, .x-grid3-summary-row td
        {
            vertical-align: middle;
        }
    </style> 

var template = '<span style="white-space:normal;">{0}</span>';
        var pctChange = function (value) {
            return Ext.String.format(template,value);
        };

<ext:Column ID="Column4" runat="server" DataIndex="WEEK1" Header="第一周(简述)" Align="left" Width = "130px">
                                                        <Renderer Fn="pctChange" />
                                                        </ext:Column>