Nothing happens when i select a feed.. can you help me figure out what's wrong/missing?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
	<meta http-equiv="content-type" content="text/html; charset=utf-8" />
	<title>RSS Reader</title>
	<script type="text/javascript" src="jquery-1.2.6.min.js" charset="utf-8">
          function get_rss_feed() {
	    $("#feedContent").empty();
	       $.get('http://barbz.0fees.net/proxy.php?url='+$('#diffFeeds').val(), function(d) {
		   $(d).find('item').each(function() {
			var $item = $(this);
			var title = $item.find('title').text();
			var link = $item.find('link').text();
			var description = $item.find('description').text();
			var pubDate = $item.find('pubDate').text();
			var html = "<div class=\"entry\"><h2 class=\"postTitle\">" + title + "<\/h2>";
			html += "<em class=\"date\">" + pubDate + "</em>";
			html += "<p class=\"description\">" + description + "</p>";
			html += "<a href=\"" + link + "\" target=\"_blank\">Read More >><\/a><\/div>";
			$('#feedContent').append($(html));  
		   });
	       });
           };
     </script>
</head>

<body>
<div id="container">
<div id="ui">
<h1>Feed Reader</h1>
<form id="selectParser" action="">
<label>Select a feed:</label>
<select id="diffFeeds">
	<option value="">Select</option>
	<option value="http://feeds.feedburner.com/aralbalkan">Aral Balkan</option>
	<option value="http://feeds.feedburner.com/peterelst/">Peter Elst</option>
	<option value="http://www.gskinner.com/blog/index.xml">Grant Skinner</option>
	<option value="http://blog.andre-michelle.com/feed/">Andre Michelle</option>
	<option value="http://feeds.feedburner.com/flashmagazine/rss2">Flash Magazine</option>
	<option value="http://casario.blogs.com/mmworld/rss.xml">Marco Casario</option>
	<option value="http://www.sephiroth.it/weblog/index.xml">Sephiroth</option>
	<option value="http://www.quasimondo.com/index.xml">Quasimondo</option>
	<option value="http://feeds.feedburner.com/sebleedelisle">Seb Lee-Delisle</option>
	<option value="http://osflash.org/feed.php">OS Flash</option>
</select>
</form>
</div>
<div id="feedContent">&nbsp;</div>
</div>
</body>
</html>

The file where

$.get('http://barbz.0fees.net/proxy.php?url='+$('#diffFeeds').val(), function(d) {

is taken is this..

<?php
	// PHP Proxy
	// Loads a XML from any location. Used with Flash/Flex apps to bypass security restrictions
	// Author: Paulo Fierro
	// January 29, 2006
	// usage: proxy.php?url=http://mysite.com/myxml.xml
 
	$session = curl_init($_GET['url']); 	               // Open the Curl session
	curl_setopt($session, CURLOPT_HEADER, false); 	       // Don't return HTTP headers
	curl_setopt($session, CURLOPT_RETURNTRANSFER, true);   // Do return the contents of the call
	$xml = curl_exec($session); 	                       // Make the call
	header("Content-Type: text/xml"); 	               // Set the content type appropriately
	echo $xml; 	      // Spit out the xml
	curl_close($session); // And close the session
?>

i'm new with this..please bare with me..thanks!^^

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