Show image in edit form

Thought it would be nice to show the image in the admin edit form. Just add the line with the <img /> tag into the function:

// add image field in edit form
function z_edit_texonomy_field($taxonomy) {
wp_enqueue_style('thickbox');
wp_enqueue_script('thickbox');
	echo '<tr class="form-field">
		<th scope="row" valign="top"><label for="taxonomy_image">Image</label></th>
		<td>
		<img src="'.get_option('z_taxonomy_image'.$taxonomy->term_id).'" /><br />
		<input type="text" name="taxonomy_image" id="taxonomy_image" value="'.get_option('z_taxonomy_image'.$taxonomy->term_id).'" /><br /></td>
	</tr>'.z_script();
}

http://wordpress.org/extend/plugins/categories-images/