Determines rather the user is scrolling or not. Useful for breaking out of scrolling animations

gistfile1.js

var userScroll = false;     
function mouseEvent(e) { 
	
	// Programic scroll has no event
	if( typeof e === 'object')
    	userScroll = true;
    else
    	userScroll = false;
    	
}
 
	// detect user scroll through mouse
if(window.addEventListener)
    document.addEventListener('DOMMouseScroll', mouseEvent, false); // Mozilla/Webkit 
else
  document.onmousewheel = mouseEvent; //for IE/OPERA etc