.dijitAdditionalEditorIconShowBlockNodes {background-image: url(../icons/showBlockNodes.gif); background-repeat: no-repeat; background-position: center center; width: 18px; height: 18px;}.dijitDisabled .dijitAdditionalEditorIconShowBlockNodes {background-image: url(../icons/showBlockNodesDisabled.gif); background-repeat: no-repeat; background-position: center center; width: 18px; height: 18px;}