% if not len(_args):
    <em>mdx_thumbnail missing arguments!</em>
    <% return STOP_RENDERING %>
% endif
<%
    import os

    #
    # arguments: full-size image, opt. title, opt. alt-text
    #
    fig_reference = _args[0]
    fig_image = '.thumbnail'.join(os.path.splitext(fig_reference))

    if len(_args) > 1:
        fig_title = _args[1]
    else:
        fig_title= ''

    fig_caption = fig_title

    if len(_args) > 2:
        fig_alt = _args[2]
    else:
        fig_alt= fig_title
%>

% if fig_caption != '':
<div class="figure">
%endif
    <a class="reference external image-reference" href="${fig_reference}" title="${fig_title}"><img alt="${fig_alt}" src="${fig_image}"></a>
%if fig_caption != '':
    <p class="caption">${fig_caption}</p>
</div>
%endif