Index: wp-includes/js/thickbox/thickbox.js
===================================================================
--- wp-includes/js/thickbox/thickbox.js	(revision 13988)
+++ wp-includes/js/thickbox/thickbox.js	(working copy)
@@ -23,7 +23,7 @@
 
 //add thickbox to href & area elements that have a class of .thickbox
 function tb_init(domChunk){
-	jQuery(domChunk).click(function(){
+	jQuery(domChunk).live('click', function(){
 	var t = this.title || this.name || null;
 	var a = this.href || this.alt;
 	var g = this.rel || false;
Index: wp-includes/script-loader.php
===================================================================
--- wp-includes/script-loader.php	(revision 13988)
+++ wp-includes/script-loader.php	(working copy)
@@ -167,7 +167,7 @@
 	$scripts->add( 'jquery-autocomplete', "/wp-includes/js/jquery/autocomplete$suffix.js", array('jquery'), '1.1' );
 	$scripts->add_data( 'jquery-autocomplete', 'group', 1 );
 
-	$scripts->add( 'thickbox', "/wp-includes/js/thickbox/thickbox.js", array('jquery'), '3.1-20100108');
+	$scripts->add( 'thickbox', "/wp-includes/js/thickbox/thickbox.js", array('jquery'), '3.1-20104104');
 	$scripts->add_data( 'thickbox', 'group', 1 );
 	$scripts->localize( 'thickbox', 'thickboxL10n', array(
 			'next' => __('Next >'),
Index: wp-admin/includes/post.php
===================================================================
--- wp-admin/includes/post.php	(revision 13988)
+++ wp-admin/includes/post.php	(working copy)
@@ -1143,8 +1143,10 @@
  */
 function _wp_post_thumbnail_html( $thumbnail_id = NULL ) {
 	global $content_width, $_wp_additional_image_sizes;
-	$content = '<p class="hide-if-no-js"><a href="#" id="set-post-thumbnail" onclick="jQuery(\'#add_image\').click();return false;">' . esc_html__( 'Set featured image' ) . '</a></p>';
 
+	$set_thumbnail_link = '<p class="hide-if-no-js"><a href="' . get_upload_iframe_src('image') . '" id="set-post-thumbnail" class="thickbox">%s</a></p>';
+	$content = sprintf($set_thumbnail_link, esc_html__( 'Set featured image' ));
+
 	if ( $thumbnail_id && get_post( $thumbnail_id ) ) {
 		$old_content_width = $content_width;
 		$content_width = 266;
@@ -1153,7 +1155,7 @@
 		else
 			$thumbnail_html = wp_get_attachment_image( $thumbnail_id, 'post-thumbnail' );
 		if ( !empty( $thumbnail_html ) ) {
-			$content = '<a href="#" id="set-post-thumbnail" onclick="jQuery(\'#add_image\').click();return false;">' . $thumbnail_html . '</a>';
+			$content = sprintf($set_thumbnail_link, $thumbnail_html);
 			$content .= '<p class="hide-if-no-js"><a href="#" id="remove-post-thumbnail" onclick="WPRemoveThumbnail();return false;">' . esc_html__( 'Remove featured image' ) . '</a></p>';
 		}
 		$content_width = $old_content_width;
Index: wp-admin/includes/media.php
===================================================================
--- wp-admin/includes/media.php	(revision 13988)
+++ wp-admin/includes/media.php	(working copy)
@@ -351,18 +351,6 @@
  * @since unknown
  */
 function media_buttons() {
-	global $post_ID, $temp_ID;
-	$uploading_iframe_ID = (int) (0 == $post_ID ? $temp_ID : $post_ID);
-	$context = apply_filters('media_buttons_context', __('Upload/Insert %s'));
-	$media_upload_iframe_src = "media-upload.php?post_id=$uploading_iframe_ID";
-	$media_title = __('Add Media');
-	$image_upload_iframe_src = apply_filters('image_upload_iframe_src', "$media_upload_iframe_src&amp;type=image");
-	$image_title = __('Add an Image');
-	$video_upload_iframe_src = apply_filters('video_upload_iframe_src', "$media_upload_iframe_src&amp;type=video");
-	$video_title = __('Add Video');
-	$audio_upload_iframe_src = apply_filters('audio_upload_iframe_src', "$media_upload_iframe_src&amp;type=audio");
-	$audio_title = __('Add Audio');
-
 	$do_image = $do_audio = $do_video = true;
 	if ( is_multisite() ) {
 		$media_buttons = get_site_option( 'mu_media_buttons' );
@@ -376,17 +364,36 @@
 	$out = '';
 
 	if ( $do_image )
-		$out .= "<a href='{$image_upload_iframe_src}&amp;TB_iframe=true' id='add_image' class='thickbox' title='$image_title' onclick='return false;'><img src='" . esc_url( admin_url( 'images/media-button-image.gif' ) ) . "' alt='$image_title' /></a>";
+		$out .= _media_button(__('Add an Image'), 'images/media-button-image.gif', 'image');
 	if ( $do_video )
-		$out .= "<a href='{$video_upload_iframe_src}&amp;TB_iframe=true' id='add_video' class='thickbox' title='$video_title' onclick='return false;'><img src='" . esc_url( admin_url( 'images/media-button-video.gif' ) ) . "' alt='$video_title' /></a>";
+		$out .= _media_button(__('Add Video'), 'images/media-button-video.gif', 'video');
 	if ( $do_audio )
-		$out .= "<a href='{$audio_upload_iframe_src}&amp;TB_iframe=true' id='add_audio' class='thickbox' title='$audio_title' onclick='return false;'><img src='" . esc_url( admin_url( 'images/media-button-music.gif' ) ) . "' alt='$audio_title' /></a>";
-	$out .= "<a href='{$media_upload_iframe_src}&amp;TB_iframe=true' id='add_media' class='thickbox' title='$media_title' onclick='return false;'><img src='" . esc_url( admin_url( 'images/media-button-other.gif' ) ) . "' alt='$media_title' /></a>";
+		$out .= _media_button(__('Add Audio'), 'images/media-button-music.gif', 'audio');
 
+	$out .= _media_button(__('Add Media'), 'images/media-button-other.gif', 'media');
+
+	$context = apply_filters('media_buttons_context', __('Upload/Insert %s'));
+
 	printf($context, $out);
 }
 add_action( 'media_buttons', 'media_buttons' );
 
+function _media_button($title, $icon, $type) {
+	return "<a href='" . get_upload_iframe_src($type) . "' id='add_$type' class='thickbox' title='$title'><img src='" . esc_url( admin_url( $icon ) ) . "' alt='$title' /></a>";
+}
+
+function get_upload_iframe_src($type) {
+	global $post_ID, $temp_ID;
+	$uploading_iframe_ID = (int) (0 == $post_ID ? $temp_ID : $post_ID);
+	$upload_iframe_src = add_query_arg('post_id', $uploading_iframe_ID, 'media-upload.php');
+
+	if ( 'media' != $type )
+		$upload_iframe_src = add_query_arg('type', $type, $upload_iframe_src);
+	$upload_iframe_src = apply_filters($type . '_upload_iframe_src', $upload_iframe_src);
+
+	return add_query_arg('TB_iframe', true, $upload_iframe_src);
+}
+
 /**
  * {@internal Missing Short Description}}
  *