HP Envy Touchpad button problems

[Gary Stainburn]

Onwards and upwards. I'm going for a micro USB WIFI adaptor to fix my wireless 
problem so I'm now moving onto my touchpad.

The problem I have is that unlike traditional touch pads the left and right 
mouse buttons on this laptop are part of the touch pad itself. The problem 
I'm experiencing here is that when I press the lower left or lower right 
corner to activate the mouse buttons the mouse pointer also moves.

Does anyone have any suggestions?

One option for the left button is a single tap of the pad.  This laptop is 
(unfortunately) Win8 dual boot.  In Win8, if I tap the middle of the touch 
pad, it acts like a left button click. Is there any way to do the same in 
Linux - I'm using F20 with KDE.

Also, on the DELL I had the following script which turned on 3-button 
emulation.

Anyone got any suggestions how I could do this better on the HP?

#!/bin/bash

X='/usr/bin/xinput'

for F in `$X list|grep Logitech|cut -d = -f 2|cut -c1-3` ; do                                                                                      
  $X set-prop $F "Evdev Middle Button Emulation" 1                                                                                                                
done 

Gary