NGUI slider effect for Android

Hi there.

I got NGUI a couple of days ago and started to test with it.

So far, I've been able to solve my resolution independence issue with NGUI, and I am proud to say NGUI does it very well.

Now, within days, if not hours, I've been able to build Main Menus and shops with NGUI easily. Some slider effects and panels, does it well.

But, here now however, I face a serious problem.

I have to make the above button. When you press it, it opens up a new menu with sliding effect.

And, since I just got NGUI recently, I have absoulutely no idea on how to make it at all.

May be it's because being a level designer, and not working on GUIs and stuffs made me a little limited.

I googled this and I got no hits till now.

Could you guys be kind enough to show me or give hints on how I could accomplish it??