Applications :: Using Graphic Tablet With Safari

So Im not sure if anyone on here will have any knowledge on this but its worth a try anyway. I use a graphics tablet instead of a mouse, but it means I have no scroll wheel. Wondering if there is a mod that anyone knows off which will allow me to do something like hold down the button assigned as "middle button" and scroll along the page like how you would on an iphone to scroll up and down, rather than having to constantly use the scroll bar.