.treegrid-indent {width:16px; height: 16px; display: inline-block; position: relative; vertical-align: top; }

.treegrid-expander {width:16px; height: 16px; display: inline-block; position: relative; vertical-align: top; cursor: pointer;}

.treegrid-expander-expanded{ background-image: url(../img/collapse.png); }
.treegrid-expander-collapsed{ background-image: url(../img/expand.png);}