bg_myimages=new Array();

function bg_changeimage(towhat){
	if (document.images){
		$('#background').css("display", "none").css('background', "url('"+towhat.src+"') no-repeat").fadeIn(500);
	}
}

function bg_preloadimages(){
	for (bg_i=0;bg_i<bg_preloadimages.arguments.length;bg_i++){
		bg_myimages[bg_i]=new Image();
		bg_myimages[bg_i].src=bg_preloadimages.arguments[bg_i];
	}
}
bg_preloadimages(
	'images/background/1-1_stage.jpg',
	'images/background/1-2_mountfuji.jpg',
	'images/background/1-3_sea.jpg',
	'images/background/2-1_night1.jpg',
	'images/background/2-2_night2.jpg',
	'images/background/2-3_night3.jpg',
	'images/background/3-1_house.jpg',
	'images/background/3-2_gaisenmon.jpg',
	'images/background/3-3_autumn.jpg',
	'images/background/4-1_park.jpg',
	'images/background/4-2_sunset.jpg',
	'images/background/4-3_town.jpg',
	'images/background/5-1_winter1.jpg',
	'images/background/5-2_winter2.jpg',
	'images/background/5-3_winter3.jpg',
	'images/background/6-1_autobacs1.jpg',
	'images/background/6-2_autobacs2.jpg'
);