function js_changeimage(){
	$("#background").fadeOut(1000,function(){
		bgidx++;
		bgidx = bgidx==background.length?0:bgidx;
		$("#background").html(background[bgidx]).fadeIn(1000);
	});
}

$(document).ready(function() {
	if(background.length>1)
		var ibackground = self.setInterval("js_changeimage()", 5000);
	
});