framework/images/webapp/images/dojox/editor/plugins/resources/css/Preview.css

.dijitAdditionalEditorIconPreview {
	background-image: url(../icons/preview.gif);
	background-repeat: no-repeat;
	background-position: center center;
	width: 18px;
	height: 18px;
}
.dijitDisabled .dijitAdditionalEditorIconPreview {
	background-image: url(../icons/previewDisabled.gif);
	background-repeat: no-repeat;
	background-position: center center;
	width: 18px;
	height: 18px;
}