Datepicker -- remove highlighted date that appears 1 month from current selection?

Datepicker -- remove highlighted date that appears 1 month from current selection?

Hi, I'm using datepicker on a website. For some reason, the current selected day/number appears highlighted every single month. Not just the current selection. 

For example, if the default date is selected: September 25, 2010. And then I jump to the next month, October 2010. October 25 will appear highlighted.

So I want to remove the highlight from October 25. Wondering how I can remove the highlight from next/previous month, so only the current selection is highlighted. Any ideas?

Thank You