unable to access the jQuery Object within a plugin
<p>I know this sounds pretty trivial, but the following function (<code>return (</code>$this).each()...`) seems to be everything but alive in my plugin, wich means that i even don't get an alert. Do you have any suggestions for a possible problem? Thx in advance.</p>

<pre><code>(function($){
    $.fn.plugin = function() { 
     return $(this).each(function(){
      var obj = $(this);
      obj.css('background', 'blue');
      alert(this);
     });
    };
})(jQuery);
</code></pre>
