ViperX will allow you to do this, alternatively Apex Launcher Pro or Nova Launcher will allow you to do this but with gestures, so swipe up on screen opens a certain application, long press on a dock icon to open something.
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Now: Nexus 4
Rom: RasSaber - Nexus 4 on crack | Der Kernel: Trinity
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Tablet: the New iPad
Yes I know! But it's a great tablet