window.addEvent('domready',function(){
	
	var btns = $$('#menu .menu_btn');
	var page = $('page');
	$('home').setStyle('display','block');

	btns.each(function(btn){
		
		var bg = btn.get('rel');
		var pg = btn.get('name');
		
		btn.addEvent('click',function(){
			
			$$('.pages').setStyle('display','none');
			$(document.body).setStyle('background','#000 url(images/bg'+bg+'.jpg)');
			$(pg).setStyle('opacity','0');
			$(pg).setStyle('display','block');
			$(pg).tween('opacity',0,1);
			
		});
	});
});