Date Picker modification

Hi,

‘sugar_version’ => ‘6.5.25’,
‘suitecrm_version’ => ‘7.10.7’

I have a next follow up date field and a status drop down in create lead section.
Status contains high and low dropdown values. When i click on high dropdown the followup datepicker should display only dates from today to next 7 days date, rest all dates must be disabed. When i select low dropdown, the followup datepicker should display only dates from current date to upcoming all dates.
Please help me out.

Thanks,
Sagar