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

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

.treegrid-expander-expanded{background: url(../img/collapse.png) 0px 4px no-repeat;; }
.treegrid-expander-collapsed{background: url(../img/expand.png)0px 4px no-repeat;;}