Update the CollectionTable View Helper to sort using jQuery TableSort

library/App/View/Helper/CollectionTable.php

 <?php
 class App_View_Helper_CollectionTable extends Zend_View_Helper_Abstract
 {
-    public function collectionTable(Unl_Model_Collection $collection, 
+    static protected $_uniqueIndex = 0;
+    
+    public function collectionTable(Unl_Model_Collection $collection,
                                     array $columns,
                                     array $searchUrlParameters = null,
                                     array $formatOptions = null,
                                     $rowClassColumn = null)
     {
+        $this->view->headScript()->appendFile('http://tablesorter.com/jquery.tablesorter.min.js');
+        self::$_uniqueIndex++;
         
         if (!is_array($searchUrlParameters)) {
             $searchUrlParameters = array();
@@ -17,18 +21,24 @@ class App_View_Helper_CollectionTable extends Zend_View_Helper_Abstract
         
         $output = '';
         
-        $output .= "<table>\n";
+        $output .= '<table id="collectionTable' . self::$_uniqueIndex . '" class="collectionTable">' . "\n";
+        $output .= "<thead>\n";
         $output .= "<tr>\n";
         foreach ($columns as $field => $title) {
             $output .= "<th>\n";
             if ($field[0] != '#') {
-                $output .= '<a href="' 
+                /*
+                $output .= '<a href="'
                         .  $this->view->url(array_merge($searchUrlParameters, array('sort' => $field)))
                         .  '">' . $title . '</a>' . "\n";
+                */
+                $output .= $title;
             }
             $output .= "</th>\n";
         }
         $output .= "</tr>\n";
+        $output .= "</thead>\n";
+        $output .= "<tbody>\n";
         foreach ($collection as $row) {
             $rowClasses = array();
             if ($rowCount++ % 2) {
@@ -56,8 +66,15 @@ class App_View_Helper_CollectionTable extends Zend_View_Helper_Abstract
             }
             $output .= "</tr>\n";
         }
+        $output .= "</tbody>\n";
         $output .= "</table>\n";
         
+        $output .= '<script type="text/javascript">' . PHP_EOL
+                .  '$(document).ready(function() {' . PHP_EOL
+                .  '    $("#collectionTable' . self::$_uniqueIndex . '").tablesorter({widgets: ["zebra"]});' . PHP_EOL
+                .  '});' . PHP_EOL
+                .  '</script>' . PHP_EOL;
+        
         return $output;
     }