Problems with a javascript on dropdownlist combined

Hi there.
I’ve adapted a script of Denis Chenu to define two dropdown list (italian provinces and towns).
This script run well in 2.05 version, but not in 2.50 version. You can test the 2.50.
With firebug I’ve found errors on these statements:

  1. answertextwidth=$(this).find(“col.answertext”).attr(‘width’).replace("%","");
  2. ddarrayseparatorwidth=$(this).find(“col.ddarrayseparator”).attr(‘width’).replace("%","");

I hope you can assist me.
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