Fixed NOT_FOUND_ERR: DOM Exception 8
Fixed NOT_FOUND_ERR: DOM Exception 8

To fix an error that occurs when the counter is added. See here for
more information:

http://getsatisfaction.com/galleria/topics/dom_error_with_galleria_plugi
n

Single change made was to alter the use of the append() function,
passing a text node rather than a string literal. New call is in-line
with the example from the jQuery documentation:

http://api.jquery.com/append/#example-1

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