i am capable of creating a shape and, by using the blending options of that layer, putting a drop shadow 'underneath' that shape. however, i don't understand how it is possible to create this particular type of effect. the effect has a drop shadow that tapers off towards each end of the shape, making it look as though the shape is further away from the background in the middle of the shape, than at the end. for examples, look at the main area on these sites, and notice how the layer looks closer to the eye in the middle of the layer, than it does at the end. as though the ends are stuck to the browser, but the middle of the page has been lifted up slightly...
(a complete rip of the site above by the looks of it!)
(just tapered towards the bottom)
(tapered just to the bottom again)
any help would be greatly appreciated, and certainly worth 500 points.