Disable standard mouse button function

[JayJay]

I figured that by using the _ispressed function from the beta it should be possible to make some sort of "mouse-driver" that does something depending on what window is currently active.

But for example with Windows-Explorer (or FireFox), mouse button 4 is tied to "previous" and mouse button 5 to "next".

So when I press mouse button 4 to double-click an icon/file, it not only sends the doubleclick from the script, but also goes to the previous screen.

Is there any way to disable those "standard" functions from mouse buttons 3, 4 and 5?