CSS background clip
#lightbox {
-moz-background-clip: border; /* Firefox 3.6 */
-webkit-background-clip: border; /* Safari 4? Chrome 6? */
background-clip: border-box; /* Firefox 4, Safari 5, Opera 10, IE 9 */
-moz-background-clip: padding; /* Firefox 3.6 */
-webkit-background-clip: padding; /* Safari 4? Chrome 6? */
background-clip: padding-box; /* Firefox 4, Safari 5, Opera 10, IE 9 */
-moz-background-clip: content; /* Firefox 3.6 */
-webkit-background-clip: content; /* Safari 4? Chrome 6? */
background-clip: content-box; /* Firefox 4, Safari 5, Opera 10, IE 9 */
}