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POJQuery CSS select first & last LI form UL list
 

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    <p>looking for some help please with the JQuery CSS selector. I want to identify the first and last LI from the main UL list and alter the CSS class. The first should be <code>class="grid_4 alpha"</code> and the last <code>class="grid_4 omega"</code></p> <pre><code>&lt;ul&gt; &lt;li id="linkcat-2" class="grid_4 this should be alpha"&gt;&lt;h4 class="widgettitle"&gt;Blogroll&lt;/h4&gt; &lt;ul class='xoxo blogroll'&gt; &lt;li&gt;&lt;a href="http://wordpress.com/"&gt;WordPress.com&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="http://wordpress.org/"&gt;WordPress.org&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li id="linkcat-2" class="grid_4"&gt;&lt;h4 class="widgettitle"&gt;Blogroll&lt;/h4&gt; &lt;ul class='xoxo blogroll'&gt; &lt;li&gt;&lt;a href="http://wordpress.com/"&gt;WordPress.com&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="http://wordpress.org/"&gt;WordPress.org&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li id="linkcat-2" class="grid_4"&gt;&lt;h4 class="widgettitle"&gt;Blogroll&lt;/h4&gt; &lt;ul class='xoxo blogroll'&gt; &lt;li&gt;&lt;a href="http://wordpress.com/"&gt;WordPress.com&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="http://wordpress.org/"&gt;WordPress.org&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li id="linkcat-2" class="grid_4 this should be omega"&gt;&lt;h4 class="widgettitle"&gt;Blogroll&lt;/h4&gt; &lt;ul class='xoxo blogroll'&gt; &lt;li&gt;&lt;a href="http://wordpress.com/"&gt;WordPress.com&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="http://wordpress.org/"&gt;WordPress.org&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; </code></pre> <p>I just cannot get the right JQuery.css functio to work.</p> <p>Help much appreciated - I can add an id to the master ul if requyired</p>
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