<div class="all-posts clrfix">
    <?php $post = $posts[0]; // Hack. Set $post so that the_date() works. ?>
    <?php /* If this is a category archive */ if (is_category()) { ?>
    <h1 class="category-title">All Posts In<?php echo single_cat_title(); ?></h1>
</div>
    <?php /* If this is a daily archive */ } elseif (is_day()) { ?>
    <h1 class="category-title">Archive for <?php the_time('F jS Y'); ?></h1>
    <?php /* If this is a monthly archive */ } elseif (is_month()) { ?>
    <h1 class="category-title">Archive for <?php the_time('F Y'); ?></h1>
    <?php /* If this is a tag archive */ } elseif (is_archive('the_tag')) {

      if ($all_the_tags);
        $all_the_tags = get_the_tags();
        foreach($all_the_tags as $this_tag) {
            if ($this_tag->name == "test1" ) {
              echo '<div id="cat-title-logo" ><img alt="test1" src="' . get_bloginfo('template_url') . '/imgs/logo-test1.jpg"/></div><h1 class="category-title">';
            } else if ($this_tag->name == "test2" ) {
              echo '<div id="cat-title-logo" ><img alt="test2" src="' . get_bloginfo('template_url') . '/imgs/logo-test2.jpg"/></div><h1 class="category-title">';
            } else {
                // it's neither, do nothing
              echo '<h1 class="category-title">
  <!-- not tagged as one or the other -->';
            }
        }
        single_tag_title('Tag: ');?>

    </h1>