var request;

//XMLHttpRequest的创建

function createRequest(url){

	if(window.XMLHttpRequest){

		request = new XMLHttpRequest();

	}else if(window.ActiveXObject){

		try{

			request= new ActiveXObject("Msxml2.XMLHTTP");

		}catch(e){

			try{

				request = new ActiveXObject("Microsoft.XMLHTTP");

			} catch(e){

			}

		}

	}

	request.onreadystatechange = getResult;

	request.open("get",url,true);

	request.send(null);

}

//ajax回调函数

function getResult(){

	if(request.readyState ==4 && request.status == 200){

		document.getElementById("select02").innerHTML = request.responseText;

	}

}

//ajax触发函数 负责生成url

function checkSelect(){

	var url = "/address/SelectServlet?select="+document.getElementById("select01").value;

	createRequest(url);

}