function addFavorite(tit){
	var brw_v = navigator.appVersion.charAt(0);
	var brw_n = navigator.appName.charAt(0);
	if((brw_v >= 4)&&(brw_n == "M")){
		window.external.AddFavorite(location.href, tit);
	}else{
		window.alert("IE4以上のみの対応です");
	}
}