div.tree-item td.customIcon {
	background: url("icones/document.png") no-repeat 0 50%;
}
div.tree-item-expanded td.customIcon {
	background: url("icones/folder_open.png") no-repeat 0 50%;
}
div.tree-item-collapsed td.customIcon {
	background: url("icones/folder.png") no-repeat 0 50%;
}