.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-image: url(../img/collapse.png); background-position-x: 3px;background-position-y: 3px;}
.treegrid-expander-collapsed{background-image: url(../img/expand.png); background-position-x: 5px;background-position-y: 3px;}