FRANKFURT-The wholesale sandals world's leading central banks joined forces to offer Europe's beleaguered banks easy access to dollars Thursday, acting to quell cheap flip flops fears that the region's lenders could fall victim to the euro-zone's government debt crisis. The European Central Bank said it would coordinate with the U.S. Federal Reserve, Bank of England, Bank of Japan and Swiss National Bank to ensure banks unlimited dollar funding through the end of the year.The rare coordinated move buoyed markets. European financial stocks, which have been battered in recent weeks, surged as concerns eased over some banks ability to raise enough dollars to meet their obligations.But the action also demonstrates that stresses on wholesale fish bowls European banks have intensified to the point that central bankers are reactivating programs used in 2008 and 2009, the depths of the biggest financial crisis since the Great Depression. That underscores worry outside of Europe that the two-year-old yiwu crisis, which has already infected some of the Continent's core economies, could quickly spread beyond Europe's shores and imperil the global economy.Many European banks have substantial exposure to government and consumer debt in markets along the euro-zone's troubled periphery, including Greece and Spain. Concerns that Greece could be forced to default wholesale closeouts on its debts have focused attention in recent weeks on how a Greek bankruptcy could affect Europe's banks, especially those in France, which are heavily invested in the region. The joint action came after two china shoes wholesale euro-zone banks tapped the ECB's existing seven-day dollar window for €575 million ($791 million) on Wednesday, only the second time in six months that type of funding has been used. European banks need U.S. currency to fund loans they have made in dollars to companies and consumers around the world, and securities they hold that are promotional items denominated on dollars. They have tended to tap short-term markets, including money-market mutual funds, for the dollars they lend out, and need to frequently repay or roll over those borrowings. They would turn one dollar store to the ECB for help only if they were unable to raise the funds elsewhere.Banks on the Stoxx Europe 600 index posted a 4.1% increase on the day, leading the broader index up 2% at close. Shares of France's BNP Paribas SA rose 13% and Société Générale SA advanced 5.4%. The euro rose wholesale shoes from china against the U.S. dollar as tensions eased over the debt crisis and demand for safe German government bonds fell. The last time these five banks jointly decided to make longer-term dollar funding available was May wholesale 2010, at the height of the Greek debt crisis. The most striking case of joint action came in October 2008, when many of the largest central banks jointly cut interest rates in the wake of Lehman Brothers' collapse. Though markets rose Thursday, analysts warned that the measures would do little to resolve the deeper challenges facing the region.