Add id number to background image
<p>I have the following, i wish to change the backorund image of a div depending on its id.</p>

<p>So far i have this.</p>

<pre><code>jQuery(document).ready(function() {
    $('.allText').hide();


$('#b1,#b2,#b3,#b4,#b5,#b6,#b7').click(function() {
    $('.allText').hide();
    $('#text'+this.id.substr(-1)).fadeIn(800);
    $('#b'+this.id.substr(-1)).css('background-image', 'url('site_images/05/over_'+'this.id.substr(-1)'+'.png'')')


});
});
</code></pre>

<p>It all seem to work apart from</p>

<pre><code>.css('background-image', 'url('site_images/05/over_'+'this.id.substr(-1)'+'.png'')')
</code></pre>
