European stocks fluctuated on Thursday to finish the day stable on the news that interest rates were to remain the same.Oil producers were among those making the biggest gains after Goldman Sachs raised its forecast for crude prices at the end of this year to 85 dollars a barrel from 65 dollars. Pharmaceuticals were also up but mining companies lost ground. Europe’s three main national indexes, the FTSE, CAC 40 and Dax, all closed with small gains. The pound slipped amid speculation British Prime Minister Gordon Brown might resign, something his office denied. A euro was buying just under a 1.42 dollars.