Index: src/wp-includes/class-wp-editor.php
===================================================================
--- src/wp-includes/class-wp-editor.php	(revision 27852)
+++ src/wp-includes/class-wp-editor.php	(working copy)
@@ -148,8 +148,9 @@
 				$switch_class = 'tmce-active';
 			}
 
-			$buttons .= '<a id="' . $editor_id . '-html" class="wp-switch-editor switch-html" onclick="switchEditors.switchto(this);">' . _x( 'Text', 'Name for the Text editor tab (formerly HTML)' ) . "</a>\n";
-			$buttons .= '<a id="' . $editor_id . '-tmce" class="wp-switch-editor switch-tmce" onclick="switchEditors.switchto(this);">' . __('Visual') . "</a>\n";
+			$buttons .= '<a id="' . $editor_id . '-tmce" class="wp-switch-editor switch-tmce" onclick="switchEditors.switchto( this ); return false;" href="#">' . __('Visual') . "</a>\n";
+			$buttons .= '<a id="' . $editor_id . '-html" class="wp-switch-editor switch-html" onclick="switchEditors.switchto( this ); return false;" href="#">' . _x( 'Text', 'Name for the Text editor tab (formerly HTML)' ) . "</a>\n";
+			
 		}
 
 		echo '<div id="wp-' . $editor_id . '-wrap" class="wp-core-ui wp-editor-wrap ' . $switch_class . '">';
Index: src/wp-includes/css/editor.css
===================================================================
--- src/wp-includes/css/editor.css	(revision 27852)
+++ src/wp-includes/css/editor.css	(working copy)
@@ -745,8 +745,9 @@
 	border: 1px solid #dedede;
 	color: #777;
 	cursor: pointer;
-	float: right;
+	float: left;
 	font: 13px/19px "Open Sans", sans-serif;
+	text-decoration: none;
 	height: 19px;
 	margin: 5px 0 0 5px;
 	padding: 3px 8px 4px;