camel-2.8.x/components/camel-web/src/main/webapp/js/dojox/form/resources/BusyButton.css

.dojoxBusyButtonIcon {
	width: 10px;
	height: 10px;
	vertical-align: middle;
	margin-left: 4px;
	background-image: url('images/loading_wheel.gif');
}