An employee changes the numbers of the c

An employee changes the numbers of the currency information board in front of an exchange office on August 8, 2011 in Budapest. The Swiss franc remained at its highs against the dollar, changing hands at 0.7594 to the dollar.The G20 vowed to bolster stability and the European Central Bank went shopping for eurozone bonds today to stem a debt crisis gone global but economists raised doubts and battered markets were knocked back down. AFP PHOTO / ATTILA KISBENEDEK (Photo credit should read ATTILA KISBENEDEK/AFP/Getty Images)