var html_request = false;
function post_request(url,area) {//初始化、指定处理函数、发送请求的函数
	html_request = false;
 	 //开始初始化XMLHttpRequest对象
  	if(window.XMLHttpRequest) { //Mozilla 浏览器
   		html_request = new XMLHttpRequest();
   		if (html_request.overrideMimeType) {//设置MiME类别
    		html_request.overrideMimeType('text/xml');
   		}
  	}
  	else if (window.ActiveXObject){ // IE浏览器
   		try {
    		html_request = new ActiveXObject("Msxml2.XMLHTTP");
   		}
		catch (e){
    		try {
     			html_request = new ActiveXObject("Microsoft.XMLHTTP");
    		}
			catch (e){}
   		}
	}
	
  	if (!html_request) { // 异常，创建对象实例失败
   		window.alert("不能创建XMLHttpRequest对象实例.");
   		return false;
  	}
  	html_request.onreadystatechange = processRequest;
 	 // 确定发送请求的方式和URL以及是否同步执行下段代码

	html_request.open("POST", url, true);
	
	html_request.setRequestHeader("Cache-Control","no-cache");
 	html_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");

 	html_request.send(area);
}

 // 处理返回信息的函数
function processRequest() {
	if (html_request.readyState == 4) { // 判断对象状态
		if (html_request.status == 200) { // 信息已经成功返回，开始处理信息
			var rtnText=html_request.responseText;
			document.getElementById('listMsg').innerHTML=rtnText;
		}
		else
			alert('信息返回错误！');
    }
}

function getFile(name){//免费收费分开
	post_request('buyToTxt.php',"name="+name);
}

function getFile2(name){//免费收费一起
	post_request('buyToTxt2.php',"name="+name);
}