NEW YORK (AFP) -- The dollar was tossed around on markets Thursday on investor nervousness in the face of persistent financial turmoil and concern over the health of the U.S. banking system.

The euro at 2100 GMT was quoted at 1.4348 dollars against 1.4323 late Wednesday in New York.
The greenback managed to rise to 105.37 yen, from 104.56 on Wednesday.
The dollar has been weakening for the last several days in reaction to major upheavals in the U.S. banking and insurance sectors that have prompted controversial -- and costly – U.S. government intervention.
In its latest move, the U.S. Federal Reserve on Thursday joined central banks around the world to provide more than 300 billion dollars to keep credit flowing through jittery global money markets.
Bob Kozak at Alaron Trading said the central bank actions adding liquidity ""encouraged traders to take on more risk and buy higher yielding currencies.""
Merrill Lynch analysts said continuing unrest on U.S. markets posed a dilemma for investors.
They said the implications of ""financial market uncertainty"" in the United States were unclear. The dollar's ""role as a safe haven needs to be balanced against the weaker U.S. financial sector outlook and lower yields.""
In troubled economic circumstances investors traditionally prefer the U.S. currency as a refuge from stress but the dollar's safe-haven status could be jeopardized the longer the U.S. financial sector crisis goes on.
""With the carnage in the markets, the real dilemma ... is gauging whether to sell the dollar, given the U.S.-centric nature of these fears for now, or to buy the dollar on expectations of repatriation,"" said Daragh Maher of Calyon.
French bank BNP Paribas said the ""safe-haven function of the dollar has been called into question, allowing sterling and the euro to retrace some of their recent losses.""