How can i implement a drill down fusion charts in drupal. I have gont through the fusioncharts_test.module but i got no idea. My question is I want to implement fusion charts based on user logins and posts.I implemented charts for rendering userlogins and posts for year,month,week seperately. How can i implement when i click on year renders month,and when i clik on month drlldown graph for week and then for days as shown in fusion charts demo example for php http://www.fusioncharts.com/Demos/Blueprint/