HTML 크롬에서 XMLHttpRequest Cross-domain이 안됩니다.

function sendRequest(url,callback,postData) { 
	var req = new XMLHttpRequest(); 
	req.open('POST',url,true); 
	req.setRequestHeader('Content-type','application/x-www-form-urlencoded'); 
	req.setRequestHeader('Access-Control-Allow-Origin','*');
	req.setRequestHeader('Access-Control-Allow-Headers','origin, x-requested-with, content-type, content-type, accept');
 	req.onreadystatechange = function () { 
		if (req.readyState != 4) return; 
		alert(req.status); //200이 아닌 그냥 0이 나옵니다.
        } 
	req.send(postData); 
}

GET /... HTTP/1.1
Accept: */*
Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: origin, x-requested-with, content-type, content-type, accept
Accept-Language: ko-KR
Accept-Encoding: gzip, deflate
Host: ....com
DNT: 1
Connection: Keep-Alive
 
 
HTTP/1.1 200 OK
Server: Apache
Accept-Ranges: bytes
Content-Length: 11
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html
 
OUTPUT DATA

OPTIONS /... HTTP/1.1
Host: ....com
Connection: keep-alive
Cache-Control: max-age=0
Access-Control-Request-Method: GET
Origin: null
Access-Control-Request-Headers: access-control-allow-origin, access-control-allow-headers
Accept: */*
Accept-Encoding: gzip,deflate,sdch
Accept-Language: ko-KR,ko;q=0.8,en-US;q=0.6,en;q=0.4
 
 
HTTP/1.1 301 Moved Permanently
Date: Mon, 18 Aug 2014 12:18:21 GMT
Server: Apache
Location: hxxp://....com/...
Content-Length: 316
Keep-Alive: timeout=5, max=99
Connection: Keep-Alive
Content-Type: text/html; charset=iso-8859-1
 
....301오류