As your wordpress ages on, the archives list is getting longer and longer. This doesn’t look neat and tidy at all. Hence, just replace the following code:

Original:

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<ul>
   <?php wp_get_archives('type=monthly'); ?>
</ul>

Replace with:

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<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>

Disclaimer :: The original archive code should be written in most wordpress theme. Just replace it and you will get:

For more template tags and regarding archives, do refer to http://codex.wordpress.org/Template_Tags/wp_get_archives

Willie Programming, Software