How to disable scroll function via jQuery ?

var keys = [37, 38, 39, 40];
function preventDefault(e) {
	e = e || window.event;
	if (e.preventDefault) e.preventDefault();
	e.returnValue = false;
}

function keydown(e) {
	for (var i = keys.length; i--;) {
		if (e.keyCode === keys[i]) {
			preventDefault(e);
			return;
		}
	}
}
function wheel(e) {
	preventDefault(e);
}
function disable_scroll() {
	if (window.addEventListener) {
		window.addEventListener('DOMMouseScroll', wheel, false);
	}
	window.onmousewheel = document.onmousewheel = wheel;
	document.onkeydown = keydown;
}
function enable_scroll() {
	if (window.removeEventListener) {
		window.removeEventListener('DOMMouseScroll', wheel, false);
	}
	window.onmousewheel = document.onmousewheel = document.onkeydown = null;
}