The hide method being called on a drag panel object has started causing internal errors in jquery (1.8.3 via Cdn) and eventually causing the page to freeze.
FYI, I believe the localization admin page supporting javascript files differ between latest source code of WWWebToolkit and the standalone globalization package. I am using the files from the globalization standalone pkg and was not able to replicate on your online demo page (http://www.west-wind.com/WestwindWebToolkit/Westwind.GlobalizationWeb/LocalizationAdmin/LocalizationAdmin.aspx)