How to Call a Custom Wordpress Plugin Function in AJAX
===

I am using a Wordpress AJAX based plugin to 'like' a list of feed items (similar to Facebook news feed). But, the feed is also generated (auto-updated in certain intervals) by an AJAX call, so I cannot call my like function inline, such as 

    <?php GetWtiLikePost();?>

Is there is a way to reference a custom plugin function inside an AJAX call? Here is my code and what I need to pass onto the returned results.

This partial code prepares data for an AJAX call:


    foreach($posts as $post){
        $rows .= '
        <li class="jta-'.$rowclass.' new_fetched_items" style="display:none;">
    <div>'.get_avatar( $post['post_author'], 50 ).'
            </div> 
		'.GetWtiLikePost().' /// THIS DOES NOT WORK!!!
                <span class="timestamp">
                    '.human_time_diff( get_the_time('U',$post['ID']), current_time('timestamp') ) . ' ago'.'
                </span>
            </div>
        </li>';

Thanks!