$.datepicker.regional['zh-CN'] = { 
  clearText: '清除', 
  clearStatus: '清除已选日期', 
  closeText: '关闭', 
  closeStatus: '不改变当前选择', 
  prevText: '<上月', 
  prevStatus: '显示上月', 
  prevBigText: '<<', 
  prevBigStatus: '显示上一年', 
  nextText: '下月>', 
  nextStatus: '显示下月', 
  nextBigText: '', 
  nextBigStatus: '显示下一年', 
  currentText: '今天', 
  currentStatus: '显示本月', 
  monthNames: ['一月','二月','三月','四月','五月','六月', '七月','八月','九月','十月','十一月','十二月'], 
  monthNamesShort: ['一','二','三','四','五','六', '七','八','九','十','十一','十二'], 
  monthStatus: '选择月份', 
  yearStatus: '选择年份', 
  weekHeader: '周', 
  weekStatus: '年内周次', 
  dayNames: ['星期日','星期一','星期二','星期三','星期四','星期五','星期六'], 
  dayNamesShort: ['周日','周一','周二','周三','周四','周五','周六'], 
  dayNamesMin: ['日','一','二','三','四','五','六'], 
  dayStatus: '设置 DD 为一周起始', 
  dateStatus: '选择 m月 d日, DD', 
  dateFormat: 'yy-mm-dd', 
  firstDay: 1, 
  initStatus: '请选择日期', 
  isRTL: false};
$.datepicker.setDefaults($.datepicker.regional['zh-CN']); 

<label for="start-datepicker">起始日期:</label> <input type="text" class="datepicker test-image-datepicker" id="start-datepicker" size="15" />&nbsp;&nbsp;
<label for="end-datepicker">结束日期:</label> <input type="text" class="datepicker test-image-datepicker" id="end-datepicker" size="15" />

var $start_date_value = "2012年1月1日"; // TODO 改成可以配置的
var $end_date_value = new Date();
// When document has loaded, initialize pagination and form 
$(document).ready(function(){  
 $(".imagezz").click($test_image_check_box_click);
 $( ".test-image-datepicker" ).datepicker({
 changeMonth: true,
 changeYear: true,
 showOn: "both",
 buttonImage: "images/calendar.gif",
 buttonImageOnly: true,
 showButtonPanel: true,
 onSelect: function(dateText, inst){
   if ($(this).attr("id") == "start-datepicker") {
    $start_date_value = dateText;
   }
   if ($(this).attr("id") == "end-datepicker") {
    $end_date_value = dateText;
   }
   //下面可以写一些根据日期变化引起页面相关部分修改的函数
   //......
  }
});
$(".test-image-datepicker").datepicker("option", "dateFormat", "yy年mm月dd日");
$('.test-image-datepicker').attr("readonly","readonly");
$("#start-datepicker").datepicker("setDate",$start_date_value);
$("#end-datepicker").datepicker("setDate",$end_date_value);