<c:choose>
                <c:when test="${zn == 'pilot'}">
                    <input type="radio" name="zoneName" value="pilot"
                        checked="checked" />
                    <font color="red">PRFQ1</font>
                </c:when>
                <c:otherwise>
                    <input type="radio" name="zoneName" value="pilot" />
                    <font color="red">PRFQ1</font>
                </c:otherwise>
            </c:choose>
            <c:choose>
                <c:when test="${zn == 'week'}">
                    <input type="radio" name="zoneName" value="week"
                        checked="checked" />
                    <font color="red">PRFQ2</font>
                </c:when>
                <c:otherwise>
                    <input type="radio" name="zoneName" value="week" />
                    <font color="red">PRFQ2</font>
                </c:otherwise>
            </c:choose>

                            <input id="ButtonFB" type="button" value="FB_DB"
                                onclick="queryFBBySourceId(${source.sourceId });" />

 function queryFBBySourceId(str){
               url="/PRFQ/processingPanel.do?method=queryFBBySourceId="+str+"&zoneName="+zn;  //但是这个zn在这里报错,说是未定义.
//我用这一句也取不到单选按钮的值不知道为什么 var zoneName=request.getElementsByName("zoneName").value;
            window.open(url,'_blank');        
       }