IE10 mobile 

I've implemented the use of pointer for IE10 mobile.

This fixes a couple of issues already raised, but without preventing default links inside the slider, as well as using the clientX and clientY properties.

I've tested on 

 - Nokia Lumia 520 (Windows 8)
-  Iphone 5 (iOS 6.1.4, Safari)
-  Ipad 1 (iOS 5.1.1, Safari)
-  Nexus 7 (Android 4.2.2, both Chrome and Firefox)
-  LG-P500 (Android 2.2 vendor browser)