Missing : after property id in JQuery
<p>I use Web Developer Firefox Toolbar to correct errors I make easier. Today, I was coding something in JQuery:</p>

<pre><code>$(document).ready(
{
    $(".menu_item").each(
    {
        if($(this).attr("rel") != "cat")
        {
            $(this).mouseover({
                $(this).css("background", "#3f3b3a");
            }).mouseout({
                $(this).css("background", "transparent");
            });
        }
    });
});
</code></pre>

<p>Now, that makes me troubles. I get the following error: Missing : after property id</p>

<p>What is wrong with that code?</p>
