diff --git a/javascript/webdriver/command.js b/javascript/webdriver/command.js
index 5c3d95aac9c03..3db8443ffa13e 100644
--- a/javascript/webdriver/command.js
+++ b/javascript/webdriver/command.js
@@ -199,9 +199,9 @@ webdriver.CommandName = {
   // optional for these commands.
   CLICK: 'mouseClick',
   DOUBLE_CLICK: 'mouseDoubleClick',
-  MOUSE_DOWN: 'mouseDown',
-  MOUSE_UP: 'mouseUp',
-  MOVE_TO: 'mouseMove',
+  MOUSE_DOWN: 'mouseButtonDown',
+  MOUSE_UP: 'mouseButtonUp',
+  MOVE_TO: 'mouseMoveTo',
   SEND_KEYS_TO_ACTIVE_ELEMENT: 'sendKeysToActiveElement',
 
   // These belong to the Advanced Touch API
diff --git a/javascript/webdriver/firefoxdomexecutor.js b/javascript/webdriver/firefoxdomexecutor.js
index b581f67051c52..5b200cc01ec01 100644
--- a/javascript/webdriver/firefoxdomexecutor.js
+++ b/javascript/webdriver/firefoxdomexecutor.js
@@ -113,12 +113,9 @@ webdriver.FirefoxDomExecutor.prototype.execute = function(command, callback) {
       command.getName() != webdriver.CommandName.SWITCH_TO_FRAME) {
     parameters['id'] = parameters['id']['ELEMENT'];
   }
-
   var json = goog.json.serialize({
     'name': command.getName(),
-    'sessionId': {
-      'value': parameters['sessionId']
-    },
+    'sessionId': parameters['sessionId'],
     'parameters': parameters
   });
   this.docElement_.setAttribute(