You are welcome :)
"And have the option to put the list in this order (best answers)."
It is not difficult, but adding as an option is difficult as the mouseover also requires change then. Just adding "order by aselects" would give the list in the order you want - so you can modify the code.
"On your site the widget is only displayed on the question pages of the category"
Actually, it is shown on all pages - Unanswered, activity, hot and Question Pages.