#1: http://malsup.com/jquery/block/#options
the "overlayCSS"-s opcaity is what you need to adjust #2: you'd set the "css" properties of "top" and "left" to point you up closer to the top right corner and just a side note, thinking as an end user, i would think more people would be "what was that" by *not* seeing the overlay, than seeing no change in the page (save your top right "Saving..", "Uploading..", etc) and not being able to click/whatever things on the page perhaps setting a slight delay on the "unblock" call so they see it for at least a second or so?
