Registered but the plugin is unsupported on ChromeOs, so I can neither test now or use it later, and I would generally disapprove of anything using a weird non-free plugin (Flash at least has large enough market penetration to tolerate).
The client is in flash.
Sorry for the gruff response. Went back and checked again and it's shockwave, which is similar but distinct from flash, although they're both produced by Macromedia. They also run on different plugins and the shockwave plugin is less portable and not supported at all under ChromeOs. I haven't done enough of anything with shockwave to know the difference between the plugins or why they used it instead of flash.