Show custom meta boxes for attachments

sjf_deh_show_custom_meta_box.php

<?php

/**
 * Draw a custom meta box for attachments
 */
function sjf_deh_show_custom_meta_box() {  
    
	// affect the current post
    global $post;  
   
    // our theme meta values for attachments
    $sjf_deh_meta_fields = sjf_deh_meta_fields();
    
    // Use nonce for verification  
    echo '<input type="hidden" name="sjf_deh_custom_meta_box_nonce" value="'.wp_create_nonce( basename( __FILE__ ) ).'" />';  
          
    // Begin the field table and loop  
    echo '<table class="form-table">';  
    
    // for each meta field, output a table row containing a select menu
    foreach( $sjf_deh_meta_fields as $field ) {  
            
        // get value of this field if it exists for this post  
        $meta = get_post_meta( $post->ID, $field['id'], true );  
  	$id = esc_attr( $field['id'] );
  	$label = esc_html( $field['label'] );          
  			          
        // begin a table row with the label for this field
        echo "
        	<tr> 
                	<th><label for='$id'>$label</label></th> 
                	<td>
        ";  
		
		// what kind of field is it?  We have this switch in place in case we do more fields at some point
		switch( $field['type'] ) {  
         
			// if our field is a select, output it thusly      
			case 'select':
				
				echo "<select name='$id' id='$id'>";
				
				// for each option, output an option tag
				foreach( $field['options'] as $o ) {  
					echo"<option value='$o' ".selected($o, $meta).">$o</option>";
				}
				
				echo '</select>';
			break;
            
		} //end switch  
            
        echo '
        		</td>
        	</tr>
        ';

    } // end foreach  

    echo '</table>'; // end table  
}