thickbox: fix incompatiblility with recent jquery
thickbox: fix incompatiblility with recent jquery

see https://gist.github.com/3956574 for history of changes in the original file
note: this is thickbox 3.1 minified with uglifyjs.

cvo-technologies/croogo,delkyd/croogo,damien-biasotto/croogo,damien-biasotto/croogo,rchavik/croogo,Wouter0100/croogo,delkyd/croogo,xintesa/croogo,rchavik/croogo,Wouter0100/croogo,rakeshtembhurne/croogo,xintesa/croogo,rakeshtembhurne/croogo,Wouter0100/croogo,rakeshtembhurne/croogo,xintesa/croogo,delkyd/croogo,cvo-technologies/croogo,cvo-technologies/croogo