// request 객체 생성
var req = null;
function create_request() {
    var request = null;
    try {
        request = new XMLHttpRequest();
    } catch (trymicrosoft) {
        try {
            request = new ActiveXObject("Msxml12.XMLHTTP");
        } catch (othermicrosoft) {
            try {
                request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (failed) {
                request = null;
            }
        }
    }
    if (request == null)
        alert("Error creating request object!");
    else
        return request;
}

// 트랙백을 사용한다면 토큰을 실시간으로 생성
var trackback_url = "";
function trackback_send_server(url) {
    req = create_request();
    trackback_url = url;
    req.onreadystatechange = function() {
        if (req.readyState == 4) {
            if (req.status == 200) {
                var token = req.responseText;
                prompt("아래 주소를 복사하세요. 이 주소는 스팸을 막기 위하여 한번만 사용 가능합니다.", trackback_url+"/"+token);
                trackback_url = "";
            }
        }
    }
    req.open("POST", g4_path+'/'+g4_bbs+'/'+'tb_token.php', true);
    req.send(null);
}

function chkAjaBrowser()
{
	var a,ua = navigator.userAgent;
	this.bw= { 
	  safari    : ((a=ua.split('AppleWebKit/')[1])?a.split('(')[0]:0)>=124 ,
	  konqueror : ((a=ua.split('Konqueror/')[1])?a.split(';')[0]:0)>=3.3 ,
	  mozes     : ((a=ua.split('Gecko/')[1])?a.split(" ")[0]:0) >= 20011128 ,
	  opera     : (!!window.opera) && ((typeof XMLHttpRequest)=='function') ,
	  msie      : (!!window.ActiveXObject)?(!!createHttpRequest()):false 
	}
	return (this.bw.safari||this.bw.konqueror||this.bw.mozes||this.bw.opera||this.bw.msie)
}

function createHttpRequest()
{
	if(window.ActiveXObject){
		 //Win e4,e5,e6??
		try {
			return new ActiveXObject("Msxml2.XMLHTTP") ;
		} catch (e) {
			try {
				return new ActiveXObject("Microsoft.XMLHTTP") ;
			} catch (e2) {
				return null ;
 			}
 		}
	} else if(window.XMLHttpRequest){
		 //Win Mac Linux m1,f1,o8 Mac s1 Linux k3??
		return new XMLHttpRequest() ;
	} else {
		return null ;
	}
}

function sendRequest(callback,data,method,url,async,sload,user,password)
{
	var oj = createHttpRequest();
	if( oj == null ) return null;
	
	var sload = (!!sendRequest.arguments[5])?sload:false;
	if(sload || method.toUpperCase() == 'GET')url += "?";
	if(sload)url=url+"t="+(new Date()).getTime();
	
	var bwoj = new chkAjaBrowser();
	var opera	  = bwoj.bw.opera;
	var safari	  = bwoj.bw.safari;
	var konqueror = bwoj.bw.konqueror;
	var mozes	  = bwoj.bw.mozes ;

	if(opera || safari || mozes){
		oj.onload = function () { callback(oj); }
	} else {
	
		oj.onreadystatechange =function () 
		{
			if ( oj.readyState == 4 ){
				callback(oj);
			}
		}
	}

	data = uriEncode(data)
	if(method.toUpperCase() == 'GET') {
		url += data
	}
	
	oj.open(method,url,async,user,password);

	setEncHeader(oj)

	oj.send(data);

	function setEncHeader(oj){
		var contentTypeUrlenc = 'application/x-www-form-urlencoded; charset=UTF-8';
		if(!window.opera){
			oj.setRequestHeader('Content-Type',contentTypeUrlenc);
		} else {
			if((typeof oj.setRequestHeader) == 'function')
				oj.setRequestHeader('Content-Type',contentTypeUrlenc);
		}	
		return oj
	}
	function uriEncode(data){

		if(data!=""){
			var encdata = '';
			var datas = data.split('&');
			for(i=1;i<datas.length;i++)
			{
				var dataq = datas[i].split('=');
				encdata += '&'+encodeURIComponent(dataq[0])+'='+encodeURIComponent(dataq[1]);
			}
		} else {
			encdata = "";
		}
		return encdata;
	}


	return oj
}