Bitstorm.org > jQuery plugins > Shadow animation > Shadow animation tests
Two extra boxes with animated shadows, just for testing.
Change the shadow to a centered 30-pixel blur with no opacity:
$('#box1').animate({boxShadow: '0 0 30px rgba(64, 64, 255, 0)'});
The first box tests the alpha channel, the second box tests negative pixel values.
Boxes to test floating point alpha values.