function getInfoxx() {
 var url;
 
      var nowTime = new Date().getTime();//获取当前时间作为随机数
 //document.forms[0].DropDownList2.style.display="none";
 
 if (document.forms[0].DropDownList1xx.value=="")
 {
  url= "http://www.mmfj.com/ajax/info1xx.aspx?id=0&time="+nowTime;
  }
  else
  {
  url= "http://www.mmfj.com/ajax/info1xx.aspx?id=" +document.forms[0].DropDownList1xx.value+"&time="+nowTime;
  }
 
 
 request.open("GET", url, true);
 request.onreadystatechange = updatePagexx;
 request.send(null);
}
//更新页面
function updatePagexx() {
 if (request.readyState == 4) {
 if (request.status == 200) {
 var response = request.responseText;
 
 var responses= new Array(); //定义一数组

responses=response.split("+"); //字符分割   
    
 document.getElementById("DropDownList21xx").innerHTML = responses[0];	
  
 
 
 }else if(request.status == 404) {
 alert ("Requested URL is not found.");
 } else if (request.status == 403) {
 alert("Access denied.");
 } else
 alert("status is " + request.status);
 }
}