Detect mousewheel usage but keep the page scrolling (javascript/jquery) -

i need detect mousewheel usage, when add event listener stops whole page scrolling no matter how fiddle it. i've tried using mousewheel plugin brandon no avail. need simple mock-up code:

user has used mousewheel: boolean=true

if boolean==true: execute code, change boolean false until next mousewheel usage.

i'm new don't go overboard it, thanks.

i think need that. bare in mind detect scroll keyboard (down key). if want detect scroll:

 $(window).scroll(function () {          //scroll  ); 

and if want defer between scroll , down:

  var lastscrolltop = 0;      $(window).scroll(function () {             var st = $(this).scrolltop();             //downscroll                   if (st > lastscrolltop){              }             //upscroll             else{              }         lastscrolltop = st;      ); 

sorry, answer not looking for. using answer abdul sy, instead on scroll, @ bind mousewheel event - http://www.jquerysdk.com/api/event-mousewheel