(1)
I am facing problem implementing Chart2D with Dojo 1.0 on Websphere Portal (portlet) 6.0. I am getting a strange JavaScript error:
currentStyle is null

Strange enough, I have not used any JavaScript var called currentStyle. I am unable to understand how I am getting this error. I tried on both IE and Mozilla Firefox. On IE I am getting this JavaScript error and on Mozilla Firefox the page is blank, does not say anything!

(2)
Secondly, I have to implement a bubble chart. Does anyone have any idea how I can do this?