None of those were working for me... Maybe I just don't know enough code...
In my sidebar - the following code works for my drop-down archive:
<li><h2>Archives</h2>
<ul>
<select name=\"archive-dropdown\" onChange='document.location.href=this.options[this.selectedIndex].value;'>
<option value=\"\"><?php echo attribute_escape(__('Select Month')); ?></option>
<?php wp_get_archives('type=monthly&format=option&show_post_count=1'); ?> </select>
</ul>
</li>
So - I am a little confused as to why the following doesn't work for a Pictures drop-down box a little below that in the sidebar:
<li><h2>Pictures</h2>
<ul>
<select name=\"picture-dropdown\" onChange='document.location.href=this.options[this.selectedIndex].value;'>
<option value=\"\"><?php echo attribute_escape(__('Select Pictures')); ?></option>
<?php get_bookmarks('category_name=Pictures'); ?> </select>
</ul>
</li>