Only show parts of image under a div using jquery
<p>I'm displaying a background picture with some semi-opaque div over it, so that it appears somewhat darker than it actually is. On top if it, I have a number of smaller, draggable divs. </p>

<p>I'd like the image to be completely visible, or revealed under these divs. These smaller divs should be like looking through windows to the below image.</p>

<p>One way to do it, is to set the background of each "window div" be a version of the larger image, and adjust the position to compensate for the div location. This works okay, but is kind of slow/jerky and very clunky.</p>

<p>Is there a better way?
Thanks!</p>
