function getXMLHttpRequest()
{
	if(window.ActiveXObject)
	{
		try
		{
			return new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				return new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e1)
			{ 
			     return null; 
			}
		}
	}
	else if(window.XMLHttpRequest)
	{
		return new XMLHttpRequest();
	}
	else
	{
		return null;
	}
}

var httpRequest = null;
//var httpRequest = getXMLHttpRequest();

function sendRequest(url, params, callback, method)
{
     httpRequest = getXMLHttpRequest();
	var httpMethod = method ? method : 'GET';
	
	if(httpMethod != 'GET' && httpMethod != 'POST')
	{
		httpMethod = 'GET';
	}
	
	var httpParams = (params == null || params == '') ? null : params;
	var httpUrl = url;
	
	if(httpMethod == 'GET' && httpParams != null)
	{
		httpUrl = httpUrl + "?" + httpParams;
	}
	
	httpRequest.open(httpMethod, httpUrl, true);
	httpRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=euc-kr");
	//httpRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
	httpRequest.onreadystatechange = callback;
//debug("setRequestHeader ÈÄ httpParams: " + httpParams);
//debug("setRequestHeader ÈÄ httpMethod: " + httpMethod);
	httpRequest.send(httpMethod == 'POST' ? httpParams : null);
//debug("send ÈÄ");
}