高分求助 struts2 <s:doubleselect

Question

以下是 <s:doubleselect   生成的代码，请看红色部分就能看出问题<select name="careers.jobFclassID" id="CgiCarrers_careers_jobFclassID" onchange="CgiCarrers_careers_jobFclassIDRedirect(this.options.selectedIndex)">
    <option value="345">业务类</option>    <option value="346">技术类</option>
    <option value="347">管理类</option>
    <option value="348">服务类</option>
</select>
<br />
<select name="careers.jobSid" id="CgiCarrers_careers_jobSid">
</select>
<script type="text/javascript">
    var CgiCarrers_careers_jobFclassIDGroup = new Array(4 + 0);
    for (i = 0; i < (4 + 0); i++)
    CgiCarrers_careers_jobFclassIDGroup[i] = new Array();    CgiCarrers_careers_jobFclassIDGroup[0][0] = new Option("业务类", "345");    CgiCarrers_careers_jobFclassIDGroup[0][1] = new Option("业务类", "345");    CgiCarrers_careers_jobFclassIDGroup[0][2] = new Option("业务类", "345");    CgiCarrers_careers_jobFclassIDGroup[0][3] = new Option("业务类", "345");    CgiCarrers_careers_jobFclassIDGroup[1][0] = new Option("技术类", "346");    CgiCarrers_careers_jobFclassIDGroup[1][1] = new Option("技术类", "346");    CgiCarrers_careers_jobFclassIDGroup[1][2] = new Option("技术类", "346");    CgiCarrers_careers_jobFclassIDGroup[1][3] = new Option("技术类", "346");    CgiCarrers_careers_jobFclassIDGroup[2][0] = new Option("管理类", "347");    CgiCarrers_careers_jobFclassIDGroup[2][1] = new Option("管理类", "347");    CgiCarrers_careers_jobFclassIDGroup[2][2] = new Option("管理类", "347");    CgiCarrers_careers_jobFclassIDGroup[2][3] = new Option("管理类", "347");    CgiCarrers_careers_jobFclassIDGroup[3][0] = new Option("服务类", "348");    CgiCarrers_careers_jobFclassIDGroup[3][1] = new Option("服务类", "348");    CgiCarrers_careers_jobFclassIDGroup[3][2] = new Option("服务类", "348");    CgiCarrers_careers_jobFclassIDGroup[3][3] = new Option("服务类", "348");
    var CgiCarrers_careers_jobFclassIDTemp = document.CgiCarrers.CgiCarrers_careers_jobSid;
    CgiCarrers_careers_jobFclassIDRedirect(0);
    function CgiCarrers_careers_jobFclassIDRedirect(x) {
     var selected = false;
        for (m = CgiCarrers_careers_jobFclassIDTemp.options.length - 1; m >= 0; m--) {
            CgiCarrers_careers_jobFclassIDTemp.options[m] = null;
        }        for (i = 0; i < CgiCarrers_careers_jobFclassIDGroup[x].length; i++) {
            CgiCarrers_careers_jobFclassIDTemp.options[i] = new Option(CgiCarrers_careers_jobFclassIDGroup[x][i].text, CgiCarrers_careers_jobFclassIDGroup[x][i].value);
        }        if ((CgiCarrers_careers_jobFclassIDTemp.options.length > 0) && (! selected)) {
            CgiCarrers_careers_jobFclassIDTemp.options[0].selected = true;
        }
    }
</script>