(function() {
  Danbooru.meta = function(key) {
    return $("meta[name=" + key + "]").attr("content");
  }
  
  Danbooru.notice = function(msg) {
    $('#notice').html(msg).show();
  }
  
  Danbooru.j_alert = function(title, msg) {
    $('<div title="' + title + '"></div>').html(msg).dialog();
  }
  
  Danbooru.j_error = function(msg) {
    this.j_alert("Error", msg);
  }
  
  Danbooru.ajax_start = function(target) {
    $(target).after(' <img src="/images/wait.gif" width="15" height="5" class="wait">');
  }
  
  Danbooru.ajax_stop = function(target) {
    $(target).next("img.wait").remove();
  }
  
  Danbooru.is_subset = function(array, subarray) {
    var all = true;
    
    $.each(subarray, function(i, val) {
      if ($.inArray(val, array) === -1) {
        all = false;
      }
    });
    
    return all;
  }
  
  Danbooru.reject = function(array, f) {
    var filtered = [];
    $.each(array, function(i, x) {
      if (!f(x)) {
        filtered.push(x);
      }
    });
    return filtered;
  }
})();