Index: src/wp-includes/post-template.php
===================================================================
--- src/wp-includes/post-template.php	(revision 29997)
+++ src/wp-includes/post-template.php	(working copy)
@@ -937,11 +937,16 @@
  */
 function wp_dropdown_pages( $args = '' ) {
 	$defaults = array(
-		'depth' => 0, 'child_of' => 0,
-		'selected' => 0, 'echo' => 1,
-		'name' => 'page_id', 'id' => '',
-		'show_option_none' => '', 'show_option_no_change' => '',
-		'option_none_value' => ''
+		'depth' 		=> 0,
+		'child_of' 		=> 0,
+		'selected' 		=> 0,
+		'echo' 			=> 1,
+		'name' 			=> 'page_id',
+		'id' 			=> '',
+		'class' 		=> '',
+		'show_option_none' 	=> '',
+		'show_option_no_change' => '',
+		'option_none_value' 	=> '',
 	);
 
 	$r = wp_parse_args( $args, $defaults );
@@ -954,7 +959,7 @@
 	}
 
 	if ( ! empty( $pages ) ) {
-		$output = "<select name='" . esc_attr( $r['name'] ) . "' id='" . esc_attr( $r['id'] ) . "'>\n";
+		$output = "<select name='" . esc_attr( $r['name'] ) . "' id='" . esc_attr( $r['id'] ) . "'class='" . esc_attr( $r['class'] ) . "'>\n";
 		if ( $r['show_option_no_change'] ) {
 			$output .= "\t<option value=\"-1\">" . $r['show_option_no_change'] . "</option>\n";
 		}