def GetEmptyItemPos(self, size):
		SITE_MAX_NUM = 4 # Total inventory number
		RET_SLOT = -1
		TOTAL_SLOT = player.INVENTORY_PAGE_SIZE*SITE_MAX_NUM #Scp1453 SilentUpdates

		mtrx = {i : False for i in xrange(TOTAL_SLOT+10)}
		for i in range(TOTAL_SLOT,TOTAL_SLOT+10): #Scp1453 SilentUpdates
			mtrx[i] = True
		for i in xrange(TOTAL_SLOT):
			if player.GetItemCount(i) != 0 and mtrx[i] == False:

				item.SelectItem(player.GetItemIndex(i))
				(trash, size_y) = item.GetItemSize()

				for x in xrange(size_y):
					mtrx[i+(5*x)] = True

		for i in xrange(TOTAL_SLOT):
			RET_SLOT = i
			for a in xrange(size):
				if mtrx[i+(5*a)] != False:
					RET_SLOT = -1
					break

			if RET_SLOT != -1:
				break

		return RET_SLOT

	def UseItemSlot(self, slotIndex):
		if mouseModule.mouseController.isAttached():
			mouseModule.mouseController.DeattachObject()

		item.SelectItem(safebox.GetItemID(self.__LocalPosToGlobalPos(slotIndex)))#TODO:slot use

		(w, h) = item.GetItemSize()
		emptyInvenSlots = self.GetEmptyItemPos(h)
		if emptyInvenSlots != -1:
			net.SendSafeboxCheckoutPacket(slotIndex+(45*self.curPageIndex), emptyInvenSlots)#Scp1453 SilentUpdates
		else:
			chat.AppendChat(chat.CHAT_TYPE_INFO, "Envanterinizde boş yer yok!")
			return