There is a large block of obfuscated javascript in a script tag immediately after the Body tag of the index page. I don’t pretend to know what this script does, but javascript is a plain language scripting code, so why go to these lengths to hide its purpose.
Nice topic that, nice and clear with a circular reference back to your topic on these forums and a good promotion of avast being the only one detecting it.
Like this topic here, I uploaded the file to VirusTotal and basically only avast was picking it up.