Just been testing my site and noticed that the 'continue shopping' button on the sidecart makes Chrome browser on the Mac crash..
I've tried it on my own site, but you can also see this behaviour on the demo sitehttp://www.foxycart.com/features/examples
click 'add a red cool example', then 'continue shopping' a few times and the browser will crash after a few cycles.
If you click directly on the page to close the cart instead of using the 'continue shopping' button it seems to be fine.
I'm using Chrome Version 40.0.2214.115 (64-bit) on OS X 10.9.5
I get the same problem on Firefox, but it seems a bit more tolerant. Chrome crashes after about 2 cycles, firefox seems to last about 10
Firefox version is 35.0.1