cocos2d CCMenu CCMenuItemImage

CCMenuItemImage *redButton = [CCMenuItemImage itemFromNormalImage:@"redbtn.png" selectedImage:@"redbtn_pushed.png" target:self selector:@selector(timerGo:)];
CCMenu *menu =  [CCMenu menuWithItems:redButton, nil];
menu.position = ccp(370,175);
[self addChild:menu];