How Cocos2d button menu from right to left stretch effect

There is a cocos2d project, I want to implement a button to click on the bottom right of the screen to the left of the button stretch out a row of buttons, and there are stretch animation from right to left. May I ask how to achieve this effect. Rookie novice, I hope they help Daniel
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Animation effect you want is a similar parallel launch it or roll up the carpet tile effect? The former words by simply moving layer of the latter can be achieved - I scholarship a month I will not ~ ~ ~ I hope you have a useful
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I was like, I click the button to generate a CCMenu, CCmenu which add a 3 CCMenuItemImage, not a layer, I want to know how can I control them to move it, I hope to guide us

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Runaction on CCMenu be timed or manually SetPosition not what every XX ms