/// <summary>
/// Makes RectTransforms float upwards
/// </summary>
/// <param name="rect">Rect.</param>
private IEnumerator BubbleUp(RectTransform rect)
{
while (true) {
yield return new WaitForFixedUpdate();
if(!rect.Equals(null)) {
rect.Translate (0, .001f, 0);
} else break;
yield return null;
}
}