var app_cookbook = {
  selected:false,

  setStars:function(num_stars) {
    document.getElementById('star_value').value = num_stars;
    app_cookbook.selected =true;
    for (var i=1; i <= num_stars; i++ ) {
      var img_id = "star" + i;
      document.getElementById(img_id).src = "/static/img/small_star_on.gif";
    }
  
    for (var j = 5; j > num_stars; j--) {
      var img_id = "star" + j;
      document.getElementById(img_id).src = "/static/img/small_star_off.gif";
    }
  },

  showStars:function(num_stars) {
    if (num_stars == '0' && !app_cookbook.selected) {
      for (var i=1; i <= 5; i++ ) {
        var img_id = "star" + i;
        document.getElementById(img_id).src = "/static/img/small_star_off.gif";
      }
    }
  
    else if (!app_cookbook.selected) {
      for (var i=1; i <= num_stars; i++ ) {
        var img_id = "star" + i;
        document.getElementById(img_id).src = "/static/img/small_star_on.gif";
      }
    }
  }
}