function findLeftPos(obj) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
	//return [curleft,curtop];
	return curleft;
}

function moveToPrevious() {
	parentPos = findLeftPos(document.getElementById('productThumbMask'));
	innerPos = findLeftPos(document.getElementById('productThumbs'));
	actualPos = parentPos - innerPos;
	//alert(actualPos);
	if(actualPos > 0) {
		new Effect.Move('productThumbs', { x: 238, y: 0, transition: Effect.Transitions.sinoidal });
	}
}  

function moveToNext(count) {
	parentPos = findLeftPos(document.getElementById('productThumbMask'));
	innerPos = findLeftPos(document.getElementById('productThumbs'));
	actualPos = parentPos - innerPos;
	stoppoint = (parseInt(count) * 119) - 238;
	if(actualPos < stoppoint) {
		new Effect.Move('productThumbs', { x: -238, y: 0, transition: Effect.Transitions.sinoidal });
	}
}