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function press(key) {
	document.getElementById("hplogo").onkeydown({
		keyCode:key,
		preventDefault:function() { }
	});
}

var interval;
document.addEventListener('keydown', function(e) {
	if (e.keyCode !== 96)
		return;

	if (interval) {
		clearInterval(interval);
		interval = null;
	} else {
		interval = setInterval(function() {
			press(37);
			press(39);
		}, 0);
	}
}, true)