.fullscreenButton {
background: -moz-image-rect(url("chrome://global/skin/media/fullscreenButton.png"), 0, 16, 16, 0) no-repeat center;
margin: 0;
.fullscreenButton {
background: -moz-image-rect(url("chrome://global/skin/media/fullscreenButton.png"), 0, 16, 16, 0) no-repeat center;
margin: 0;