I know it\'s possible to detect up and down e.g.
function handle(delta) { if (delta < 0) { alert(\'down\'); } else { alert(\'up\');
The DOMMouseWheel event in Firefox has an axis property.
axis
The mousewheel event in Chrome has wheelDeltaX and wheelDeltaY.
mousewheel
wheelDeltaX
wheelDeltaY
Sadly, I cannot find any equivalent propery for IE events (testing on IE9).