I am using Gantt charts to render my data. I have a few queries- 
  
1) In the categories I display months. I have a default of 6 months back to current date. Now, I want to be able to click on next or back links to move 1 category(month) forward or backwards. 
Is there an option to paginate this? 
  
2) As I have a lot of data to be displayed, is there a way to incrementally load data on the gantt chart. If not, how do you suggest handling large quantities of data? 
  
3) When loading the chart, is there a way to show a 'Loading' image? If yes, how? 
  
Thanks, 
Sunil