It's is very nice. But unfortunetaly the overview map get stuck during the usage. The processor usage of the browser gets up and/or the browser hangs. I've tried to change it with the OverviewMap of the ESRIStandardMapApplication but with no luck yet... The different window types are a bit tricky to handle.
Anybody the same effect? Do you have any suggestions? Will you update these sample to make the Overview map more smooth?