jquery函数不会被调用

Question

我有以下HTML代码：

<link rel="stylesheet" type="text/css" href="../themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="../themes/icon.css">
<link rel="stylesheet" type="text/css" href="demo.css">
<script type="text/javascript" src="../jquery-1.8.0.min.js"></script>
<script type="text/javascript" src="../jquery.easyui.min.js"></script>
<script>
    $(function(){
        $('#test').treegrid({
            iconCls:'icon-save',
            width:1500,
            height:350,
            nowrap: false,
            rownumbers: true,
            animate:true,
            collapsible:true,
        url:'jsondata.jsp',
            idField:'job',
            treeField:'job',
            columns:[[
                             {field:'job',title:'Job',width:200,
                    formatter:function(value){
                        return '<span style="color:red">'+value+'</span>';
                    }
                },
                {field:'desc',title:'Description',width:250},
                {field:'start_date',title:'Start date',width:150,rowspan:2},
                {field:'end_date',title:'End Date',width:250,rowspan:2},
                {field:'progress',title:'Progress',width:300,rowspan:2,
                    formatter:function(value){
                    alert(value);
                        if (value){
                            var s = '<div style="width:100%;background:#fff;border:1px solid #ccc">' +
                                    '<div style="width:' + value + '%;background:red">' + value + '%' + '</div>'
                                    '</div>';
                            alert(s);
                            return s;
                        } else {
                            return '';
                        }
                    }
                }
            ]],
            onBeforeLoad:function(row,param){
                if (row){
                    alert("subdata.json called");
                    $(this).treegrid('options').url = 'jsondata.jsp';
                } else {
                    alert("data.json called");
                    $(this).treegrid('options').url = 'jsondata.jsp';
                }
            },
            onContextMenu: function(e,row){
                e.preventDefault();
                $(this).treegrid('unselectAll');
                $(this).treegrid('select', row.job);
                $('#mm').menu('show', {
                    left: e.pageX,
                    top: e.pageY
                });
            }
        });
    });

    function reload(){
        var node = $('#test').treegrid('getSelected');
        if (node){
            $('#test').treegrid('reload', node.job);
        } else {
            $('#test').treegrid('reload');
        }
    }
    function collapse(){
        var node = $('#test').treegrid('getSelected');
        if (node){
            $('#test').treegrid('collapse', node.job);
        }
    }
    function expand(){
        var node = $('#test').treegrid('getSelected');
        if (node){
            $('#test').treegrid('expand', node.job);
        }
    }
    function collapseAll(){
        var node = $('#test').treegrid('getSelected');
        if (node){
            $('#test').treegrid('collapseAll', node.job);
        } else {
            $('#test').treegrid('collapseAll');
        }
    }
    function expandAll(){
        var node = $('#test').treegrid('getSelected');
        if (node){
            $('#test').treegrid('expandAll', node.job);
        } else {
            $('#test').treegrid('expandAll');
        }
    }
    var jobIndex = 1000;
    function append(){
        jobIndex++;
        var data = [{
            job: 'job'+jobIndex,
            desc: 'desc'+jobIndex,
            start_date: '12/28/2012',
            end_date: '12/30/2012',
            progress: '80'
        }];
        var node = $('#test').treegrid('getSelected');
        $('#test').treegrid('append', {
            parent: (node?node.job:null),
            data: data
        });
    }
    function remove(){
        var node = $('#test').treegrid('getSelected');
        if (node){
            $('#test').treegrid('remove', node.job);
        }
    }
</script>

<div style="margin:10px 0;">
    <a href="#" onclick="reload()">Reload</a>
    <a href="#" onclick="collapse()">Collapse</a>
    <a href="#" onclick="expand()">Expand</a>
    <a href="#" onclick="collapseAll()">CollapseAll</a>
    <a href="#" onclick="expandAll()">ExpandAll</a>
    <a href="#" onclick="append()">Append</a>
</div>

<table id="test"></table>

<div id="mm" class="easyui-menu" style="width:120px;">
    <div onclick="append()">Append</div>
    <div onclick="remove()">Remove</div>
</div>

当我直接运行这个文件时，它运行正常，即它调用jsondata.jsp文件，我将从中返回json数据。

但是当我使用mapping.findForward通过struts动作调用它时，它只显示超链接（重新加载，折叠..）并且不调用$（function（）{}。该怎么办？