def __init__(self):
		SymbolDownloader.__init__(self, "Future")
	def __init__(self):
		SymbolDownloader.__init__(self, "Currency")
	def __init__(self):
		SymbolDownloader.__init__(self, "Stock")
	def getRowHeader(self):
		return SymbolDownloader.getRowHeader(self) + ["categoryName", "categoryNr"]
	def __init__(self):
		SymbolDownloader.__init__(self, "ETF")
	def __init__(self):
		SymbolDownloader.__init__(self, "Index")
	def __init__(self):
		SymbolDownloader.__init__(self, "MutualFund")