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by rimantas 5532 days ago

  But it is well known (see either "The Good Parts" or "High
  Performance Javascript" that appending strings is quadratic 
  in JavaScript, and that the best way to assemble a large, 
  multipart string is arrayOfStrings.join('');
It's a bit fuzzy now, modern browser optimized that quite a bit, so this mainly applies to older versions of IE.