I know you can do this with mouse gestures but I'm a context menu freak.
For me, there is no such gesture which does it, just some gestures which use js function to scroll up, down, left or right.
You can use it, but it's not exactly what youre asking for.
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Mail : alain [dot] aupeix [at] wanadoo [dot] fr
Ubuntu 12.04 - Gramps 3.4.9 - Harbour 3.2.0 - Hwgui 2.20-3 - K-Meleon 76.0 rc