title: Check if user is scrolling with trackpad?
body: <p>I have created a site where users are able to scroll through a gallery using mouse scroll or arrow up/down. It is working like I want it to, and changing one image pr scroll when scrolling with a mouse.
  But if the user is scrolling with a trackpad it is almost impossible to scroll a single image at a time.</p>
  
  <p>So my question is: Is there a way to check if the user is scrolling by trackpad, and then changing the behavior of the scrolling, so it becomes less sensitive, and thereby easier to scroll a single image at a time?</p>
  
  <p>I am not very good at jquery, my solution so far has been put together from a couple of scripts:</p>
  
  <p><a href="http://jsfiddle.net/MukuMedia/PFjzX/33/" rel="noreferrer">http://jsfiddle.net/MukuMedia/PFjzX/33/</a></p>
  
  <p>Hope someone can help me :)</p>