var http_request = false;
function send_request(method, url, content, responseType, callback) {
	http_request = false;
       // alert(method+" "+url);
	if (window.XMLHttpRequest) {//Mozilla浏览器
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType("text/xml");
		}
	} else {
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");

		}
		catch (e) {

			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {

			}
		}

	}

	if (!http_request) {
               //不能建立XMLHttpRequest对象实例！
		window.alert("\xe4\xb8\x8d\xe8\x83\xbd\xe5\x88\x9b\xe5\xbb\xbaXMLHttpRequest\xe5\xaf\xb9\xe8\xb1\xa1\xe5\xae\x9e\xe4\xbe\x8b\xe3\x80\x82");
		return false;
	}
	if (responseType.toLowerCase() == "text") {
		http_request.onreadystatechange = callback;
	} else {
		window.alert("\xe5\x93\x8d\xe5\xba\x94\xe7\xb1\xbb\xe5\x88\xab\xe5\x8f\x82\xe6\x95\xb0\xe9\x94\x99\xe8\xaf\xaf\xe3\x80\x82");
		return false;
	}
	if (method.toLowerCase() == "get") {
		http_request.open(method, url, true);
		//http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=gb2312");
		//alert(url);
	} else {
		if (method.toLowerCase() == "post") {
			http_request.open(method, url, true);
			http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
			//setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=utf-8");
		} else {
			window.alert("http\xe8\xaf\xb7\xe6\xb1\x82\xe7\xb1\xbb\xe5\x88\xab\xe5\x8f\x82\xe6\x95\xb0\xe9\x94\x99\xe8\xaf\xaf\xe3\x80\x82");
			return false;
		}
	}

	http_request.send(content);
        //http_request.send(url);
}
//澶\uFFFD\uFFFD\uFFFD\uFFFD杩\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD煎\uFFFD\uFFFD淇℃\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD\uFFFD芥\uFFFD\uFFFD
function processTextResponse() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			alert("Text\xe6\x96\x87\xe6\xa1\xa3\xe5\x93\x8d\xe5\xba\x94");
		} else {
			alert("\xe6\x82\xa8\xe6\x89\x80\xe8\xaf\xb7\xe6\xb1\x82\xe7\x9a\x84\xe9\xa1\xb5\xe9\x9d\xa2\xe6\x9c\x89\xe5\xbc\x82\xe5\xb8\xb8\xe3\x80\x82");
		}
	}
}
function processXMLResponse() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			alert("XML\xe6\x96\x87\xe6\xa1\xa3\xe5\x93\x8d\xe5\xba\x94");
		} else {
			alert("\xe6\x82\xa8\xe6\x89\x80\xe8\xaf\xb7\xe6\xb1\x82\xe7\x9a\x84\xe9\xa1\xb5\xe9\x9d\xa2\xe6\x9c\x89\xe5\xbc\x82\xe5\xb8\xb8\xe3\x80\x82");
		}
	}
}
function getRan() {
	return Math.floor(Math.random() * 99999);
}
<!---->
function testa(){
 alert("testa");
}