// Script for getting posts
function ajax_filter_get_posts( $taxonomy ) {
  // Verify nonce
  if( !isset( $_POST['afp_nonce'] ) || !wp_verify_nonce( $_POST['afp_nonce'], 'afp_nonce' ) )
    die('Permission denied');
  $taxonomy = $_POST['taxonomy'];
  // WP Query
  $args = array(
  //'tag' => $taxonomy,
  'post_type' => 'work',
  'posts_per_page' => 1
  /*'tax_query' => array(
    array(
        'taxonomy' => 'filters',
        'terms' => array('100','99','154'),
        'field' => 'id',
        'operator' => 'NOT IN'
      )
  )*/
);
  // If taxonomy is not set, remove key from array and get all posts
  /*if( !$taxonomy ) {
    unset( $args['tag'] );
  }*/
  $query = new WP_Query( $args );
  if ( $query->have_posts() ) : while ( $query->have_posts() ) : $query->the_post(); ?>
  <!--<a href=""></a>-->
  <a href="http://www.youtube.com/watch?v=" class="prettyPhoto" title="">
    <img src="http://img.youtube.com/vi//2.jpg" class="prettyPhoto" title="">
  </a>
  <a href="http://vimeo.com/" class="prettyPhoto" title="">
  </a>
  <a href="#embedd-video" class="prettyPhoto" title="">
  </a>
  <a href="" class="prettyPhoto" title="">
  </a>
  <a href="" title="" class="pic">
  </a>
  <a href="" title="" class="video">
    <img src="http://img.youtube.com/vi//0.jpg" class="prettyPhoto" title="" width="215px">
  </a>
  <a href="" title="" class="pic">
    <img src="http://img.youtube.com/vi//0.jpg" class="prettyPhoto" title="" width="215px">
  </a>
  <a href=""></a>
  No posts found
  <?php
  endif;
  die();
}

add_action('wp_ajax_filter_posts', 'ajax_filter_get_posts');
add_action('wp_ajax_nopriv_filter_posts', 'ajax_filter_get_posts');