{% if album.get_main_image %}
<a href="{{ album.slug }}/"><img src="{{ album.get_main_image.url|thumbnail:"width=250" }}" alt="{{ album.get_main_image.caption }}" /></a>
{% endif %}
{% if album.get_main_image %}
<a href="{{ album.slug }}/"><img src="{{ album.get_main_image.url|thumbnail:"width=250" }}" alt="{{ album.get_main_image.caption }}" /></a>
{% endif %}