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function changeChoose(selectId,type){
      $("id").innerHTML="";
      var param="id="+$("sId").value+"&lId="+$("lId").value+"&other=allfromHistory";
      var url = "/sUtil.do?chooseType="+type;
      var ajaxReq = new XHR({'method':'post','autoCancel':'true',
                        onSuccess:function(response){fillElement(response,selectId,true);},
                        onFailure:function(){}
                        });
      ajaxReq.send(url,param);
      ajaxReq = null;
    }

---

${"id"}Ï൱ÓÚdocument.getElementById("id")
var param = "..."; //¶¨ÒåurlµÄ²ÎÊý
var url = "..";//¶¨Òåurl£¬ºóÃæ¸úÉϲÎÊý¡£
//ÏÂÃæµÄÕâ¶ÎÖ÷ÒªÊǶ¨ÒåXMLHttpRequest¶ÔÏó£¬ÆäÖÐÇëÇó·þÎñµÄ·½·¨ÊÇpost·½Ê½,³É¹¦·µ»ØÖ´ÐÐÄäÃûº¯Êý¡£¡£¡££¬·µ»Øʧ°Üʲô¶¼²»×ö
var ajaxReq = new XHR({'method':'post','autoCancel':'true', 
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