.x-tree-node img.Folder, .x-tree-node-collapsed img.Folder{
    background: url("closedfolder.png");
}

.x-tree-node-expanded img.Folder {
    background: url("openfolder.png");
}

.x-tree-node img.kmlFolder, .x-tree-node-collapsed img.kmlFolder{
    background: url("closedfolder.png");
}

.x-tree-node-expanded img.kmlFolder {
    background: url("openfolder.png");
}

.x-tree-node img.kmlDocument, .x-tree-node-collapsed img.kmlDocument{
    background: url("closedfolder.png");
}

.x-tree-node-expanded img.kmlDocument {
    background: url("openfolder.png");
}

.x-tree-node img.kmlScreenOverlay, .x-tree-node-collapsed img.kmlScreenOverlay{
    background: url("overlay.png");
}

.x-tree-node img.kmlGroundOverlay, .x-tree-node-collapsed img.kmlGroundOverlay{
    background: url("overlay.png");
}