adding html code to thumbs

hi,
thx for your really helpful pluign!

i’d like to ask if there’s a way fo force the normal html code serving of the thumbnails by the function ” $lcp_display_output .= $this->get_thumbnail($single);”, in order to add some needed html custom code to the following default output structure:

<a ...><img class="attachment-thumbnail wp-post-image" ...></a>

thx in advance,
stefano

http://ww.wp.xz.cn/extend/plugins/list-category-posts/