var current;
var active;

$(document).ready(function() {
  current = window.location.hash;
  if(current == "") {
    current = "#home";
  }
  
  update(current);
  
  $('#content').slideDown(200);
});

function update(id) {
  $('a[href=' + current + ']').removeClass("active");
  $('a[href=' + id + ']').addClass("active");
  
  $('#content').slideUp(200, function callback() {
    $(current).hide();
    $(id).show();
    current = id;
  });
  
  $('#content').slideDown(200);
}