Index: css/wp-admin.css
===================================================================
--- css/wp-admin.css	(revision 23967)
+++ css/wp-admin.css	(working copy)
@@ -3621,6 +3621,13 @@
 	z-index: 1;
 	margin-top: 20px;
 }
+#revisions-diff div label.diff-label {
+	font-weight: bold;
+	display: block;
+	margin-top: 5px;
+	padding-left: 3px;
+	font-size: 14px;
+}
 
 .diff-header {
 	height: 35px;
Index: js/revisions.js
===================================================================
--- js/revisions.js	(revision 23967)
+++ js/revisions.js	(working copy)
@@ -593,7 +593,7 @@
 		render: function() {
 			var addHtml = '';
 			var thediff;
-
+                        
 			// compare two revisions mode?
 			if ( ! Diff.singleRevision ) {
 				if ( this.draggingLeft ) {
@@ -634,7 +634,11 @@
 
 			// hide the restore button when on the last sport/current post data
 			$( '#restore-revision' ).toggle( ! Diff.revisions.at( Diff.rightDiff - 1 ).get( 'is_current_revision' ) );
-
+                        if ( $( '#compare-two-revisions' ).is( ':checked' ) ) {
+                            jQuery("#diff-title-to strong:first-child").show()
+                        }else{
+                            jQuery("#diff-title-to strong:first-child").html(" ")
+                        }
 			return this;
 		},
 
@@ -651,7 +655,7 @@
 			if ( $( '#compare-two-revisions' ).is( ':checked' ) ) { // compare 2 mode
 				Diff.singleRevision = false ;
 
-				if ( 1 === Diff.rightDiff )
+                                if ( 1 === Diff.rightDiff )
 					Diff.rightDiff = 2;
 
 				Diff.revisionView.draggingLeft = false;
@@ -661,7 +665,7 @@
 				Diff.revisionView.model = Diff.rightHandleRevisions;
 
 			} else { // compare one mode
-				Diff.singleRevision = true;
+                                Diff.singleRevision = true;
 				Diff.revisionView.draggingLeft = false;
 				Diff.reloadModelSingle();
 			}
Index: includes/ajax-actions.php
===================================================================
--- includes/ajax-actions.php	(revision 23967)
+++ includes/ajax-actions.php	(working copy)
@@ -2152,8 +2152,10 @@
 			// compare_to == 0 means first revision, so compare to a blank field to show whats changed
 			$diff = wp_text_diff_with_count( ( 0 == $compare_to ) ? '' : $left_content, $right_content, $args );
 
-			if ( isset( $diff[ 'html' ] ) )
+			if ( isset( $diff[ 'html' ] ) ){
+				$content.= "<label class='diff-label'>" .  __(ucfirst(str_replace("post_","",$field)) ." : ") ."</label>";
 				$content .= $diff[ 'html' ];
+			}
 
 			if ( isset( $diff[ 'lines_added' ] ) )
 				$lines_added = $lines_added + $diff[ 'lines_added' ];