void Awake()
{
defaultVec = new Vector3(0, CellHeight, 0);
mDrag = NGUITools.FindInParents<CustomScrollView>(gameObject);
m_height = mDrag.GetComponent<UIPanel>().height;
m_maxLine = Mathf.CeilToInt(m_height / CellHeight) + 1;
m_cellList = new WrapItemBase[m_maxLine];
if (ShowBg)
{
m_bgList = new Transform[m_maxLine];
}
CreateItem();
lastY = mDrag.transform.localPosition.y;
}