Way to vertically extend windows on one half of split screen onto other half

Question

I have a wide TV as a monitor and am looking for a way to divide the screen then extend the windows of applications on one half of the screen onto the second half of the screen. In other words, turn my one landscape display into two portrait displays, and extend out of the bottom of one into the top of the other, like this:

firefox extended vertically onto two halves of a split screen

This will allow me to view more of the content of tall web pages at once, without having to scroll up and down so much.Two taskbars is not strictly necessary.

I have tried various demos such as Displayfusion, Actual Multiple MOnitors, and Maxto, but I haven't found any way of doing this.

Another possible solution is create a ghost monitor and extend the bottom of the real monitor display onto it, then bring the outputs of both monitors into a split screen on the real monitor (kind of merging them into my real display) but I haven't found any software which can do the part of bringing both outputs into the one display yet.

Windows 8.1 GeForce GTX260

Thanks.