Problem with Invient charts scalability(FireFox)

i’m using invient-charts to display some line charts. I added dynamically a big number of charts(12+++) in a tab view. The problem is when i switch from tab views, the application becomes slow and make in average 3~=5 seconds to display the selected tab view (mainly the charts view). Is there anyway to optmize the loading of the charts or using the browser cache to avoid the repaint call?