Transparency over jQuery slideshow

Transparency over jQuery slideshow

Friends,
We are removing a Flash movie we did several years ago on a site and replacing it with jQuery.  We are trying to do the effect shown here in Flash where the static transparency block goes over a slideshow:   http://www.thefortress.com.  Our jQuery slideshows fade-up/out along with the pictures, we'd like to have the block simply stay there.  Thanks for any assistance.