I am trying to display financial data belonging to different people in different tabs. Every tab contains a pie chart, a column chart and a grid. Everything works as expected in every browser other than Firefox. In Firefox, it's behavior is rather strange; the first tab displays charts OK but from second tab onward pie chart is all dark. When first tab is closed, second tab becomes first and pie chart looks alright. I am not sure why is this so only in Firefox. I am also attaching screen shots to help you understand the problem better. Any ideas would be greatly appreciated.