ie7

Hi, thanks so much for this great tool!

Unfortunately I have to support clients on ie7 but it doesn't appear to be working for me in ie7. I notice in CropImage.cs line 282 appends a comma at the end of the value appended to the stringbuilder. ie7 doesn't like a final comma at the end of the last item. However, even when I remove the last comma and build the solution, ie7 crashes when I try to define a crop area so I'm not sure how to fix.

btw I used the basic.aspx page as an example.

Thanks :)

Start with CropImage.cs around line 282 and use basic.aspx as the reproduction entry point. Reproduce the IE7 crash while defining a crop area, then investigate the generated client-side value and related browser behavior. Done means the crop area can be defined successfully in IE7 without a trailing comma issue.

Written by the indexing model from the issue text.