function km_extendedOnload() {
	if (get_object('x_headPhoto')) {
		var today=new Date();
		switch (today.getMonth()) {
			case 10:
			case 11:
			case 0:
			case 1:
			case 2:
				var bgImage='headPhoto_winter.jpg';
			break;
			default:
				var bgImage='headPhoto_summer.jpg';
		}
		get_object('x_headPhoto').style.backgroundImage='url(km/graphic/'+bgImage+')';
	}
}