How to detect scroll direction

Question

I want to run a function when someone scrolls down on an element. Something like this:

 $('div').scrollDown(function(){ alert('down') });
 $('div').scrollUp(function(){ alert('up') });

But those functions don't exist. Is there a solution to this problem? Awwwards seem to be able to do it (logo in navbar changes depending on scroll direction). Unfortunately, the source code is compressed, so no luck there.

Answer 1

I managed to figure it out in the end, so if anyone is looking for the answer:

 //Firefox
 $('#elem').bind('DOMMouseScroll', function(e){
     if(e.originalEvent.detail > 0) {
         //scroll down
         console.log('Down');
     }else {
         //scroll up
         console.log('Up');
     }

     //prevent page fom scrolling
     return false;
 });

 //IE, Opera, Safari
 $('#elem').bind('mousewheel', function(e){
     if(e.originalEvent.wheelDelta < 0) {
         //scroll down
         console.log('Down');
     }else {
         //scroll up
         console.log('Up');
     }

     //prevent page fom scrolling
     return false;
 });