function img_change(i){
	new Effect.toggle($('home'+i),'appear', {afterFinish:function(){
		if(i == 3) i=0;
		new Effect.toggle($('home'+(i+1)),'appear', {afterFinish:function(){
			i++;
			if(i == 3)	setTimeout('img_change('+i+')',10000);
			else		setTimeout('img_change('+i+')',3000);
		},duration:0.5});
	},duration:0.5});
}

Event.observe(window, 'load', function(){
	var i = 1;
	setTimeout('img_change('+i+')',3000);
});