function wheel(event){
	var delta = 0;
	/* For IE. */
	if (!event) {
		event = window.event;
	}
	/* IE/Opera. */
	if (event.wheelDelta) {
		delta = event.wheelDelta/120;
		if (window.opera)
		 delta = delta;
	}
	/* Mozilla case. */
	else if (event.detail) {
		delta = -event.detail/3;
	}
	
	if (delta) {
		if (delta < 0) {
			window.scrollBy(100, 0)
		} else {
			window.scrollBy(-100, 0)
		}
	}
	
	if (event.preventDefault) {
		event.preventDefault();
	}
	
	event.returnValue = false;
}

if (window.addEventListener) {
	window.addEventListener('DOMMouseScroll', wheel, false);
}

window.onmousewheel = document.onmousewheel = wheel;