Hi,
I checked the pivotTable examples and I can add Drill down functionalities to the pivottable.js. When any cell or chart area is clicked or double clicked an event can be triggered with row and column values passed. Based on these details, drill down popup can be shown as in the link. Pls let me know if you have any other specific requirement in drilldown.
Pls PM me to discuss further details.
I have 4 years of front-end devlopment using HTML, CSS, JS, jQuery, Bootstrap and AngualarJS. I am proficient programmer in asp.net and php also. I can assure you that I will provide quality work in given time period without any issues. The final code will be delivered with comments and documentation.
Looking forward to work with you,
Kasi