Use google image charts to export image to excel?
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I building a web application with grails and am using the jxl api to generate an excel file to allow formatting.  I would like to generate a chart using data in my application to include with the excel file.

The only source I have found to create a static image that could be saved and then inserted into the excel file is the deprecated Google image charts api to build a URL string to retrieve the corresponding chart.

1.  Should I be concerned about doing this with the deprecated google image charts, or should I be fine, given that I am only using of the pie chart type

2.  Should I be going about this entirely differently?  Using the browser to save the image could be problematic because the app needs to support ie. 7-9.

Thanks