Add a spotlight sheen to a background

spotlight.css

.spotlight {
    background:-webkit-gradient(radial, 250 50,0,250 50,800,
        from(rgba(255,255,255,.4)),to(transparent)) transparent;
    background: -moz-radial-gradient(250px 50px, 
        rgba(255,255,255,.4), transparent) transparent;
}
/*
  Found this nice little snippet on Forrst.com at http://forrst.com/posts/Add_a_spotlight_sheen_to_your_backgrounds_with-zWQ
*/