private void addItemToTable( string itemName, UISprite itemSprite ){
UISprite sprite = GameObject.Instantiate( itemSprite, r_Table.transform.position, r_Table.transform.rotation) as UISprite;
sprite.name = itemName;
sprite.gameObject.transform.parent = r_Table.transform;
sprite.gameObject.transform.localScale = Vector3.one;
if(!m_Items.ContainsKey(itemName)){
m_Items.Add(itemName, new List<GameObject>());
}
m_Items[itemName].Add(sprite.gameObject);
InventoryTableController.reposition ();
}