function displayPrices(artnr, prices){
	var pricelist = ""; 
	for(price in prices[artnr].preisliste){
		for (key in prices[artnr].preisliste[price]){
			pricelist = pricelist + " " + key + ": " + prices[artnr].preisliste[price][key]+ "<br />";

		}
	}
	return pricelist;
}