javascript for enabling/disabling 2 date range/date in Cognos -

I am looking for JavaScript to enable / disable two date range / date signals in Kagos.

Is there any JavaScript to enable / disable two date range signals? If I select the date 1 prompt, then Date2 prompt should be dark and vice versa.

I am using Kagos 8.3 SP2.

How to reach a radio button or combo box conditionally based on a date indicator or any other selection ? Doing this will ensure that only one signal is selected, and Javascript will not be required.