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)
	{
		try{
			return new ActiveXObject("Msxml2.XMLHTTP") ;
		} catch(e){
			try{
				return new ActiveXObject("Microsoft.XMLHTTP") ;
			} catch(e2){
				return null;
			}
		}
	}else if(window.XMLHttpRequest){
		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)

//	alert("data : "+data+"\n");
	
	oj.send(data);

	function setEncHeader(oj)
	{
		var contentTypeUrlenc = 'application/x-www-form-urlencoded; charset=UTF-8';
	//	var contentTypeUrlenc = 'application/x-www-form-urlencoded; charset=euc-kr';
		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


}