function getXMLHttpRequestObject(){
	var ajax = false;
	if(window.XMLHttpRequest){
		ajax = new XMLHttpRequest();
	}else if(window.ActiveXObject){
		try{
			ajax = new ActiveXObject("Msxml2.XMLHTTP");
		}catch(e){
			try{
			ajax = new ActiveXObject("Microsoft.XMLHTTP");
			}catch(e){ }
		}
	}
	return ajax;
}

function init(toGroup){
	var ajax = getXMLHttpRequestObject();
	if(ajax){
		ajax.open('get', '/tracking/track.php?fromUrl='+encodeURIComponent(location.host+location.pathname)+'&toGroup='+encodeURIComponent(toGroup));
		ajax.send(null);
		return false;
	}else{
	}
}