* U.S. dollar on track to snap five-week losing streak
* Wall Street zigzags, European shares edge lower
* Crude oil edges up on strong German sentiment data
* U.S. Treasuries edge lower (Updates with close of European markets)
By Herbert Lash
NEW YORK, Oct 22 (Reuters) - World stocks and the U.S. dollar see-sawed on Friday before a meeting of the Group of 20 leading economies that kept markets choppy and traders skittish as they took profits after this week's advance.
Uncertainty about the outcome of the meeting of G20 finance ministers, who are seeking a common path to manage global trade, prompted some investors to moderate their dollar-selling until the gathering in South Korea ends this weekend.
On Wall Street, the S&P 500 and the Nasdaq rose while the Dow edged lower. But European shares closed slightly off six-month highs touched in the previous session as the dollar gained a bit and was on track to snap a five-week losing streak against major currencies.
The United States struggled on Friday to win backing for a proposal to set limits on external imbalances as a way of pressing countries with surpluses such as China to let their exchange rates rise. For details see: [
]U.S. Treasury Secretary Timothy Geithner proposed limiting surpluses and deficits on the current account -- the broadest measure of trade in goods and services -- to 4 percent of gross domestic product, according to Japan's finance minister.
But the plan met with a cool reception, and big exporting countries that habitually run chunky trade surpluses led the opposition.
Many emerging market policy-makers blame lax U.S. policies for the global financial crisis, and they fear Washington is prepared to debase the dollar by flooding the banking system with cash to try to breathe life into a sluggish U.S. economy.
"It's unlikely the G20 meeting will produce any substantial clarity regarding the direction of currencies. It will not prevent the U.S. Federal Reserve from announcing a new round of quantitative easing," said UniCredit analyst Tammo Greetfeld.
Traders said large bets against the U.S. currency pointed to a correction. But they noted they would not rule out another lurch lower for the dollar, which has fallen about 7 percent against currencies over the past month.
The dollar rose slightly against major currencies, with the U.S. Dollar Index <.DXY> up 0.11 percent at 77.501 and is up about 0.4 percent this week, its first weekly gain since mid-September.
The euro <EUR=> was barely changed against the dollar at $1.3922, and against the Japanese yen, the dollar <JPY=> was up 0.14 percent at 81.45.
"The dollar has fallen quite rapidly over the last month or so and positions are somewhat extended. We saw the tide turning a bit this week," said Nick Bennenbroek, currency strategist at Wells Fargo in New York.
BAIDU JUMPS, L'OREAL LAGS
On Wall Street, technology shares edged higher as results from Baidu Inc <BIDU.O> and SanDisk <SNDK.O> bolstered the sector's outlook, while the broader market was little changed. [
]At 1 p.m., the Dow Jones industrial average <
> slipped 21.76 points, or 0.20 percent, to 11,124.81. But the Standard & Poor's 500 Index <.SPX> gained 1.19 points, or 0.10 percent, to 1,181.45. And the Nasdaq Composite Index < > rose 15.61 points, or 0.63 percent, to 2,475.28.European shares closed down, with the FTSEurofirst 300 <
> index of top European shares falling 0.35 percent to end at 1,089.45 points.Consumer-related stocks, which had surged earlier in the week, were among the biggest losers. LVMH <LVMH.PA> lost 0.8 percent and L'Oreal <OREP.PA> surrendered 1.9 percent.
"Earnings have been pretty good and a lot of stocks rose this week on the back of this, so people are using the excuse of currency tensions with the G20 meeting to cash in profits," said David Thebault, head of quantitative sales trading, at Global Equities, in Paris.
The MSCI all-country world index of stocks <.MIWD00000PUS> slipped 0.25 percent at midday in New York.
Japan's Nikkei share average rose 0.54 percent to close at 9,426.71 in thin trade <
>, while the MSCI Asia Pacific ex-Japan index edged up 0.09 percent<.MIAPJ0000PUS>.OIL GAINS, BONDS AND GOLD DIP
Oil received a lift on news that German business sentiment reached its strongest in 3-1/2 years in October, according to the Munich-based Ifo think tank's business climate index, which indicates growth levels six months ahead. [
]U.S. crude futures <CLc1> gained 59 cents, or 0.7 percent, to $81.15 a barrel. ICE Brent <LC0c1> in London rose 78 cents to $82.61 a barrel.
U.S. government debt prices fell. [
]The benchmark 10-year U.S. Treasury note <US10YT=RR> was down 5/32 in price to yield 2.57 percent.
Gold prices steadied, paring most losses that took them to 2-1/2 week lows earlier in the session.
Spot gold prices <XAU=> fell 10 cents to $1,323.50 an ounce at 12:53 p.m. versus $1,323.60 late in New York on Thursday.
Gold investors were wary whether any clear agreement to tackle currency imbalances would be reached at the G20 meeting. [
] (Reporting by Rodrigo Campos, Steven C. Johnson and Richard Leong in New York and Kirsten Donovan, Atul Prakash, Emma Farge and Jan Harvey in London, Blaise Robinson in Paris; Writing by Herbert Lash; Editing by Jan Paschal)