This test will try to open a JSON-feed containing javascript inside a string in several iframes. The iframes will return different content-types and you will see a green check if the javascript is running.
It's expected that the javascript will run if the content-type is "text/html" (and maybe also if the content-type is empty). You will see major differences between IE and other browsers regarding when the javascript will run and when it won't.
NB! You will get some download dialogs for some of the content-types. Just ignore them (hit cancel)
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