[Decode]

FreeZon,

$(document).mousemove(function(e){
  var n = getComputedStyle(document.documentElement).height.slice(0,-2);
  var s = getComputedStyle(document.documentElement).width.slice(0,-2);
  $('#logo_img').css('transform', 'rotateX('+ (n/2-e.pageY) +'deg)');
  $('#logo_img').css('transform', 'rotateY('+ (s/2-e.pageX) +'deg)');
});