// JavaScript Document
function createXMLHttpRequest(cbFunc){
	var XMLhttpObject = null;
	try{
		//Firefox, Opera, Safari
		XMLhttpObject = new XMLHttpRequest();
	}catch(e){
		try{
			//IE6�`�H
			XMLhttpObject = new ActiveXObject("Msxml2.XMLHTTP");
		}catch(e){
			try{
				//IE‚»‚Ì‘¼
				XMLhttpObject = new ActiveXObject("Microsoft.XMLHTTP");
			}catch(e){
				return null;
			}
		}
	}
	if(XMLhttpObject){
		XMLhttpObject.onreadystatechange = cbFunc;
	}
	return XMLhttpObject;
}

function $(tagId){
	return document.getElementById(tagId);
}