var XMLHttpReq=false;
var url1=false;
 		//????һ??HttpRequest?ԏ󍊠		function createXMLHttpRequest()
 		{
if(window.XMLHttpRequest)
{ //Mozilla
XMLHttpReq=new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
try
{
XMLHttpReq=new ActiveXObject("Msxml2.XMLHTTP");

}
catch(e)
{
try
{

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

}
catch(e)
{
alert("?ä??Ʒ??֧?ցJAX!")
//return false;
}

}

}
 		}

 		//??ˍǫdz??ʽ
 		function send(url)
 		{

 			createXMLHttpRequest();
 			if(!XMLHttpReq)
 			{
 				 alert('Giving up :( Cannot create an XMLHTTP instance');
            	 return false;
 			}
 			url1=url;
 			XMLHttpReq.open("GET",url,true);
 			XMLHttpReq.onreadystatechange=proce;   //ָ??ϬӦ?ĺ?ʽ
 			XMLHttpReq.send(null);  //??ˍǫdz
 		}
 		function proce()
 		{
 			if(XMLHttpReq.readyState==4)
 			{
 				if(XMLHttpReq.status==200)
 				{
 					get_msg();
 				}
 				else
{
window.alert("˹ǫdz?Ē?æӐҬ??");
}
 			}
 		}
 		function get_msg()
{
var res=XMLHttpReq.responseText;

objid=document.getElementById('ps');
objid.innerHTML=res;
//objid.style.display="block";

}
function checkLogin1()
{
var username = $("#username").val();
var pwd = $("#passwords").val();
if (username.trim() == "" || username.length < 6 )
{
alert("Please enter your Username.");
$("#username").focus();
return false;
}
else if(chekEmail(username)==false)
{
alert("Invalid E-mail Address.");
$("#username").focus();
return false;
}
if (pwd.trim() == "" || pwd.length < 6)
{
alert("Please enter your Password.");
$("#passwords").focus();
return false;
}
send('ajaxlogin.php?username='+username+'&passwords='+pwd);
}