Index: wp-includes/media.php
===================================================================
--- wp-includes/media.php	(revision 22872)
+++ wp-includes/media.php	(working copy)
@@ -1496,6 +1496,13 @@
  * @since 3.5.0
  */
 function wp_print_media_templates( $attachment ) {
+	$ie_class = '';
+	if ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 8') !== false )
+		$ie_class = ' ie8';
+	if ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 9') !== false )
+		$ie_class = ' ie9';
+	if ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 10') !== false )
+		$ie_class = ' ie10';
 	?>
 	<script type="text/html" id="tmpl-media-frame">
 		<div class="media-frame-menu"></div>
@@ -1505,7 +1512,7 @@
 	</script>
 
 	<script type="text/html" id="tmpl-media-modal">
-		<div class="media-modal">
+		<div class="media-modal<?php echo $ie_class; ?>">
 			<h3 class="media-modal-title">{{ data.title }}</h3>
 			<a class="media-modal-close" href="" title="<?php esc_attr_e('Close'); ?>">&times;</a>
 		</div>
Index: wp-includes/css/media-views.css
===================================================================
--- wp-includes/css/media-views.css	(revision 22872)
+++ wp-includes/css/media-views.css	(working copy)
@@ -484,6 +484,20 @@
 	user-select:         none;
 }
 
+.ie8 .attachments .attachment,
+.ie9 .attachments .attachment,
+.ie10 .attachments .attachment {
+	text-align: center;
+}
+.ie8 .attachments .attachment .icon,
+.ie9 .attachments .attachment .icon,
+.ie10 .attachments .attachment .icon {
+	padding-top: 20%;
+	position: relative;
+	left: 0;
+	top: 0;
+}
+
 .selected.attachment {
 	box-shadow:
 		0 0 0 1px #fff,
Index: wp-admin/includes/template.php
===================================================================
--- wp-admin/includes/template.php	(revision 22872)
+++ wp-admin/includes/template.php	(working copy)
@@ -1636,14 +1636,16 @@
 
 function _wp_admin_html_begin() {
 	$admin_html_class = ( is_admin_bar_showing() ) ? 'wp-toolbar' : '';
+
+	if ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 8') !== false )
+		$admin_html_class .= ' ie8';
+	if ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 9') !== false )
+		$admin_html_class .= ' ie9';
+	if ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 10') !== false )
+		$admin_html_class .= ' ie10';
 ?>
 <!DOCTYPE html>
-<!--[if IE 8]>
-<html xmlns="http://www.w3.org/1999/xhtml" class="ie8 <?php echo $admin_html_class; ?>" <?php do_action('admin_xml_ns'); ?> <?php language_attributes(); ?>>
-<![endif]-->
-<!--[if !(IE 8) ]><!-->
 <html xmlns="http://www.w3.org/1999/xhtml" class="<?php echo $admin_html_class; ?>" <?php do_action('admin_xml_ns'); ?> <?php language_attributes(); ?>>
-<!--<![endif]-->
 <head>
 <meta http-equiv="Content-Type" content="<?php bloginfo('html_type'); ?>; charset=<?php echo get_option('blog_charset'); ?>" />
 <?php
