var photo = 0;

function popup(imageId,x,y)
{
	x = parseInt(x);
	y = parseInt(y);

	photoX = x + 25;
	photoY = y + 105;

	var left = (screen.width-photoX)/2;
	var top = (screen.height-photoY)/2;

	if (!photo.closed && photo.location)
	{
		photo.resizeTo(photoX,photoY);
		photo.moveTo(left, top);
		//photo.location.href = '/popupImage.php?file=' + file + '&desc=' + desc + '&x=' + x + '&y=' + y;
		photo.location.href = '/popupImage.php?id=' + imageId;

	}
	else
	{
		photo=window.open('/popupImage.php?id=' + imageId, 'photoPopup','resizable=no,width=' + photoX + ',height=' + photoY + ',scrollbars=0,top=' + top + ',left=' + left + '');
		if (!photo.opener) photo.opener = self;
		photo.resizeTo(photoX,photoY);
	}
	if (window.focus)
	{
		photo.focus();
	}
}

function getObj(id)
{
	return document.getElementById(id);
}

function changeQuantity(id,val)
{
	productQty = getObj(id);

	if (val == 1)
	{
		productQty.value++;
	}
	else if (!(productQty.value <= 0))
	{
		productQty.value--;
	}
}