Background image for Bubble Charts

[tnt...@yahoo.com]

Hello...

I know  there are limitations with IE for background transparency.. and everything I have tried to get past it has failed.

In chrome I am able to set: 

 backgroundColor: 'transparent',

and overlay the bubble chart over another layer that contains an image to get a background image for my bubble chart. Is there any way to work around this or cheat to get the same results in IE 8?. I am essentially just trying to have the bubbles generated over an image. I have seen other examples where the bubbles are rendered over google maps, so I am hopeful that somebody might have an idea.  

here is the example where the bubbles are displayed over  google maps, and this works in IE 8:

http://carlvlewis.net/?p=2422

Thank you in advance for any help !!

[asgallant]

That guy isn't overlaying a BubbleChart onto Google Maps, he is doing some custom thing that has nothing to do with BubbleCharts.  The long and short of it is that there is no known means of getting around the transparency problem in IE 8 with the Visualization API.

[tnt...@yahoo.com]

Thank you for the reply asgallant. That's disappointing... I think I might have a way around it- is there a way to increase the boarder around the bubbles so they are thicker lines? Can you also change the color of the line around the bubbles? if you can and point me to an example, I'll be happy to share my results.

Thank you!

-Todd 

[asgallant]

You can change the color of the bubble's border with the bubble.stroke option, which takes an HTML color string ('red', '#00FFCC', etc).  There is not an option to control the width of the border.