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¿ë
    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¿ë
    return new XMLHttpRequest() ;
  } else {
    return null ;
  }
}

function sendRequest(callback,data,method,url,async,sload,user,password)
{
  //XMLHttpRequest ¿ÀºêÁ§Æ® »ý¼º
  var oj = createHttpRequest();
  if( oj == null ) return null;

  //°­Á¦ ·ÎµåÀÇ ¼³Á¤
  var sload = (!!sendRequest.arguments[5])?sload:false;
  if(sload || method.toUpperCase() == 'GET')url += "?";
  if(sload)url=url+"t="+(new Date()).getTime();

  //ºê¶ó¿ìÀú ÆÇÁ¤
  var bwoj = new chkAjaBrowser();
  var opera	  = bwoj.bw.opera;
  var safari	  = bwoj.bw.safari;
  var konqueror = bwoj.bw.konqueror;
  var mozes	  = bwoj.bw.mozes ;

  //¼Û½Å ó¸®
  if(opera || safari || mozes){
    oj.onload = function () { callback(oj); }
  } else {

    oj.onreadystatechange =function ()
    {
      if ( oj.readyState == 4 ){
        callback(oj);
      }
    }
  }

  //URL ÀÎÄÚµù
  data = uriEncode(data)
  if(method.toUpperCase() == 'GET') {
    url += data
  }

  //open ¸Þ¼Òµå
  oj.open(method,url,async,user,password);

  //Çì´õ application/x-www-form-urlencoded ¼³Á¤
  setEncHeader(oj)

  //send ¸Þ¼Òµå
  oj.send(data);

  //URI ÀÎÄÚµù Çì´õ ¼³Á¤
  function setEncHeader(oj){

    //Çì´õ application/x-www-form-urlencoded ¼³Á¤
    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
  }

  //URL ÀÎÄÚµù
  function uriEncode(data){

    if(data!=""){
      //&¿Í=·Î ÀÏ´Ü ºÐÇØÇؼ­ encode
      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
}