First alert image.
It appears that the site may have been hacked as there are two huge chunks of obfuscated javascript in two script tags after the closing table tag.
These script tags are pushed well out to the right so if the user looks at the page source they won't see the script tags. I have a 1920X1200 screen and it isn't in view even in full screen mode.
Second alert image.
This looks like the file was saved into your browser cache, no point in doing anything other than clearing your browser cache as any suspicion of an infected file, clear the cache. The abort connection of the first alert should have stopped it getting down to the cache, why it didn't I don't know. Perhaps your use of a sandbox may have still downloaded it into the cache, but the standard shield provides another level of protection.