var http_request = false;
function send_request(url) {//初始化、指定处理函数、发送请求的函数
http_request = false;
//开始初始化XMLHttpRequest 对象
if(window.XMLHttpRequest) { //Mozilla 浏览器
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {//设置MiME 类别
http_request.overrideMimeType("text/xml");
}
}
else if (window.ActiveXObject) { // IE 浏览器
try {
http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
http_request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if (!http_request) { // 异常，创建对象实例失败
window.alert("不能创建XMLHttpRequest 对象实例.");
return false;
}
http_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
http_request.open("GET", url, true);
http_request.send(null);
}
// 处理返回信息的函数
// 处理返回信息的函数
function processRequest() {
if (http_request.readyState == 4) { // 判断对象状态
if (http_request.status == 200) { // 信息已经成功返回，开始处理信息
document.getElementById('chkinfo').innerHTML = http_request.responseText;
} else { //页面不正常
alert("您所请求的页面有异常。");
}
}
}
function idCheck(){
var f = document.regform;
var corp_id = f.corpid.value;
if(corp_id==""){
window.alert("Please specify a Member ID.");
f.corpid.focus();
return false;
}else{
	document.getElementById('chkinfo').innerHTML = "<img src=\"../images/ajax-loader.gif\" />";
	var number = Math.random();
	number = number * 1000000000;
	number = Math.ceil(number);
	send_request('corp_idcheck.php?corp_id='+corp_id+'&todo=chkid'+'&ranum='+number);
}
}