Validate Callout/Calendar.do selection

System

I'm working on a date picker using the "/Callout/Calendar.do" function. I have the cgi-callout date in my DCR

...cgi-callout url="/iw-cc/DataCapture/Callout/Calendar.do" label="Select Date"...

Question: Is there a way to validate that I can only select future dates (i.e. one month from current date) and it will prompt if you select a past date?

Appreciate any help on this.

Thanks.