.gridxTreeExpandoCell {height: 100%; position: relative; min-height: 16px;}.gridxTreeExpandoIcon {background-image: url("images/treeExpandImages.png"); background-repeat:no-repeat; background-position: 0 0; height: 16px; width: 16px; position: absolute; top: 0; left: 0; cursor: pointer;}.gridx .gridxTreeExpandoLoading .gridxTreeExpandoIcon{background-image: url('images/treeExpand_loading.gif'); background-position: 0 0;}.gridxTreeExpandoIcon:hover {background-position: -18px 0;}.gridxTreeExpandoCellOpen .gridxTreeExpandoIcon {background-position: -36px 0;}.gridxTreeExpandoCellOpen .gridxTreeExpandoIcon:hover {background-position: -54px 0;}.gridxTreeExpandoIconNoChildren {visibility: hidden;}.gridxTreeExpandoInner {visibility: hidden; text-align: center;}.dijit_a11y .gridxTreeExpandoInner {visibility: visible;}