// JavaScript Document
	$(function() {
	
		function scroll(direction) {
	
			var scroll, i,
					positions = [],
					here = $(window).scrollTop(),
					collection = $('.post');
	
			collection.each(function() {
				positions.push(parseInt($(this).offset()['top'],10));
			});
	
			for(i = 0; i < positions.length; i++) {
				if (direction == 'next' && positions[i] > here) { scroll = collection.get(i); break; }
				if (direction == 'prev' && i > 0 && positions[i] >= here) { scroll = collection.get(i-1); break; }
			}
	
			if (scroll) {
				$.scrollTo(scroll, {
					duration: 750       
				});
			}
	
			return false;
		}
	
		$("#next,#prev").click(function() {        
			return scroll($(this).attr('id'));        
		});
	
		$(".menu, .voltar").click(function() {
			$.scrollTo($($(this).attr("href")), {
				duration: 750
			});
			
			return false;
		});
	
	});