.treegrid-indent {width:8px; height: 8px; display: inline-block; position: relative;}

.treegrid-expander {width:8px; height: 8px; display: inline-block; position: relative; cursor: pointer; font-size: 8px;}

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