下拉框無限級聯

$(".selectMe").live('change',function(){
     $(this).nextAll(".selectMe").remove();
     document.getElementById("warning").innerHTML="";
     var url = "<%=path%>/dept/getNextDeptInfo.action?deptId="+$(this).val();
     var obj=$(this);
     $.getJSON(url, null, function call(data) {
        if(data!=null&&data!=""&&data.deptList.length>0){
        var str="<select    class='selectMe' name='countInfo.deptId'><option value=''>請選擇</option> ";
        for(var i=0;i<data.deptList.length;i++){
            str+="<option    value='"+data.deptList[i].deptId+"'>"+data.deptList[i].deptName+"</option>";
        }
        str+="</select>";
        obj.after(str);
        }
     });
     getPerson($(this).val());
    });

<select class="selectMe" >

<option value="1">sss

</option
<option value="2">ssswww

</option
</select>