elevateZoom Plus - Screen Mode help needed!

elevateZoom Plus - Screen Mode help needed!

Hi guys!

I'm using elevateZoom Plus plugin from Igorlino GitHub user! (the original plugin is from elevateWeb GitHub user) 

I'm trying to implement a Screen Mode Image Zoom workaround, as you can see in this link! ( html code)

There are some issues I want to fix:

 - the scrolling is inverted (wheel up = zoom out \ wheel down = zoom in), I want the otherwise!
 - if (image width\height < screen width\height), the image is positioned to the top\left screen (I want it centered instead)
 - the "zoom in" is limited to the image real size by default, (I want to change that too)

I would really appreciate any help from you guys here in this forum! Thanks!