[Plugin: Level2Categories 2] Working in WP 2.8.6

I have Level2Categories 2 working in 2.8.6. Here are the changes I made.

In function l2c_admin, change ‘add_management_page’ to ‘add_opeions_page’:

function l2c_admin() {
   if (function_exists('add_options_page')) {
      add_options_page('Levels2Categories Options', 'Levels2Categories', 8, basename(__FILE__), 'levels2categories_admin_page');
   }
}

In function l2c_disable_cats, insert line ‘$user_level = l2c_user_level()’:

function l2c_disable_cats(){
   global $l2c_table, $user_level;
   $query=mysql_query("SELECT * FROM $l2c_table");
   $cat_total=mysql_num_rows($query);
   if ($cat_total > 0) {
      $user_level = l2c_user_level();
      echo "<script>";
      while ($fetch=mysql_fetch_array($query)) {
         if ($user_level < $fetch['level']){
            echo "document.getElementById('category-".$fetch['cat_ID']."').style.display='none';";
            echo "if(document.getElementById('popular-category-".$fetch['cat_ID']."')) document.getElementById('popular-category-".$fetch['cat_ID']."').style.display='none';";
         }
      }
      echo "</script>";
   }
}

Add new function l2c_user_level:

function l2c_user_level () {
   for ( $i=10; $i>0; --$i) {
      if (current_user_can('level_' . $i)) return $i;
   }
   return 0;
}