// @sample        if(chkAjaBrowser()){ location.href='nonajax.htm' }
	// @sample        oj = new chkAjaBrowser();if(oj.bw.safari){ /* Safari ÄÚµå */ }
	// @return        ¶óÀ̺귯¸®°¡ µ¿ÀÛ°¡´ÉÇÑ ºê¶ó¿ìÀú¸¸ true  true|false

	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)
	}

	////
	// XMLHttpRequest ¿ÀºêÁ§Æ® »ý¼º
	//
	// @sample        oj = createHttpRequest()
	// @return        XMLHttpRequest ¿ÀºêÁ§Æ®(ÀνºÅϽº)
	//
	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 ;
		}
	}
	
	////
	// ¼Û¼ö½Å ÇÔ¼ö
	//
	// @sample         sendRequest(onloaded,'&prog=1','POST','./about2.php',true,true)
	// @param callback ¼Û¼ö½Å½Ã¿¡ ±âµ¿ÇÏ´Â ÇÔ¼ö À̸§
	// @param data	   ¼Û½ÅÇÏ´Â µ¥ÀÌÅÍ (&À̸§1=°ª1&À̸§2=°ª2...)
	// @param method   "POST" ¶Ç´Â "GET"
	// @param url      ¿äûÇÏ´Â ÆÄÀÏÀÇ URL
	// @param async	   ºñµ¿±â¶ó¸é true µ¿±â¶ó¸é false
	// @param sload	   ¼öÆÛ ·Îµå true·Î °­Á¦¡¢»ý·«¶Ç´Â false´Â ±âº»
	// @param user	   ÀÎÁõ ÆäÀÌÁö¿ë »ç¿ëÀÚ À̸§
	// @param password ÀÎÁõ ÆäÀÌÁö¿ë ¾ÏÈ£
	//
	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¸®
		//opera´Â onreadystatechange¿¡ Áߺ¹ ÀÀ´äÀÌ ÀÖÀ» ¼ö ÀÖ¾î onload°¡ ¾ÈÀü
		//Moz,FireFox´Â oj.readyState==3¿¡¼­µµ ¼ö½ÅÇϹǷΠº¸ÅëÀº onload°¡ ¾ÈÀü
		//Win ie¿¡¼­´Â onload°¡ µ¿ÀÛÇÏÁö ¾Ê´Â´Ù
		//KonquerorÀº onload°¡ ºÒ¾ÈÁ¤
		//Âü°í http://jsgt.org/ajax/ref/test/response/responsetext/try1.php
		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)

		//µð¹ö±×
		//alert("////jslb_ajaxxx.js//// \n data:"+data+" \n method:"+method+" \n url:"+url+" \n async:"+async);
		
		//send ¸Þ¼Òµå
		oj.send(data);

		//URI ÀÎÄÚµù Çì´õ ¼³Á¤
		function setEncHeader(oj){
	
			//Çì´õ application/x-www-form-urlencoded ¼³Á¤
			// @see  http://www.asahi-net.or.jp/~sd5a-ucd/rec-html401j/interact/forms.html#h-17.13.3
			// @see  #h-17.3
			//   ( enctypeÀÇ ±âº»°ªÀº "application/x-www-form-urlencoded")
			//   h-17.3¿¡ ÀÇÇØ¡¢POST/GET »ó°ü¾øÀÌ ¼³Á¤
			//   POST¿¡¼­ "multipart/form-data"À» ¼³Á¤ÇÒ ÇÊ¿ä°¡ ÀÖ´Â °æ¿ì¿¡´Â Ä¿½ºÅ͸¶ÀÌÁî ÇØÁÖ¼¼¿ä.
			//
			//  ÀÌ ¸Þ¼Òµå°¡ Win Opera8.0¿¡¼­ ¿¡·¯°¡ ³ª¹Ç·Î ºÐ±â(8.01Àº OK)
			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
	}