LONDON, Oct 13 (Reuters) - The euro shot up on Monday, pulling away from a 1-1/2-year low against the dollar as a pledge by European governments to rescue banks from collapse plugged a deluge of selling in the single European currency. Sterling also gained traction after the British government said three of the nation's biggest banks would take $64 billion in official funds to boost their capital While the flurry of initiatives to contain the worst financial crisis since the 1930s may have stemmed waves of selling for now, analysts were uncertain whether the improving mood would last very long. "With risk perception hitting yet another record high last week...it may take longer until investors' confidence is restored to its pre-crisis levels," Dresdner Kleinwort strategists said in a note to clients. "New triggers of risk aversion like real sector defaults should abound as global economy heads into a recession going forward. Markets thus should remain jittery in the coming months," they added. (Reporting by Veronica Brown; Editing by Chris Pizzey)

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