var $ = function(node) {
	return document.getElementById(node);
}

//创建xmlHTTP对象
var xmlHTTP = new function() {
	var xmlhttp = false;
	try {
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch (e) {
		try {
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch (e2) {
			xmlhttp = false;
		}
	}

	if (!xmlhttp && typeof XMLHttpRequest != "undefined") {
		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}

function ajax_Login() 
{
	xmlHTTP.onreadystatechange = function() {
	if (xmlHTTP.readyState == 4) 
		{
			if (xmlHTTP.status == 200) 
			{
				var data = xmlHTTP.responseText;

				if (data != "") 
				{
					$("divLogin").innerHTML = data;
				}
			}
		}
		else 
		{
			$("divLogin").innerHTML = "<div style=\"width:250;height:116;overflow:hidden;\"><img src=\"../../images/ajax-loader.gif\" alt=\"正在登陆\" width=\"100\" height=\"100\" valign=center /></div>";
		}
	}

	var expires=-1;
	var obj = $("expires");
	if (obj.checked) {
		expires = obj.value;
	}
	xmlHTTP.open("get", "ClientProcess.aspx?username=" + escape($("username").value) + "&password=" + $("password").value + "&expires=" + expires, true);
	xmlHTTP.setRequestHeader("If-Modified-Since", "0");
	xmlHTTP.setRequestHeader("content-type", "application/x-www-form-urlencoded");
	xmlHTTP.send(null);
}