function showMenu(id) {
	var elem = document.getElementById(id);
	elem.style.display = 'block';
}
function hideMenu(id) {
	var elem = document.getElementById(id);
	elem.style.display = 'none';
}
function animateStrip(direction, maxval, id)
{
	var div = document.getElementById('scroller'+id);
	var step = 144;
	if(direction == 'right') {
		if (parseInt(div.style.left) > maxval+4*step) {
			div.style.left = parseInt(div.style.left) - 144 +'px';
		}
	} else {
		if (parseInt(div.style.left) < 0) {
			div.style.left = parseInt(div.style.left) + 144 +'px';
		}
	}
}