Hi Daniel,
We do support IE7 and IE8. Indeed, there seems to be a problem in the case you have described and I am logging it for research. You can follow the issue's progress, comment and vote on it in
this URL. I have also updated your Telerik points for your report.
What I would advise as a general point is to always set dimensions for the chart so that it knows where and how to render. It is a data visualization control, so it is more or less static and it does not support size set in percentage (which is exactly what a simple div without explicit dimensions is).
It is also important to note that the BorderColor, BorderStyle and BorderWidth properties are merely inherited from WebControl and are not implemented here, so they should be avoided.
All that being said - the following markup works fine with me, and I would suggest using CSS rules to set properties for your chart wrappers:
Regards,
Marin Bratanov
the Telerik team
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