RenderUpdater updater = new RenderUpdater() {
public void update(Object arg0) {
WorldManager wm = (WorldManager) arg0;
BlendState as = (BlendState) wm.getRenderManager().createRendererState(RenderState.StateType.Blend);
// activate blending
as.setBlendEnabled(true);
// set the source function
as.setSourceFunction(BlendState.SourceFunction.SourceAlpha);
// set the destination function
as.setDestinationFunction(BlendState.DestinationFunction.OneMinusSourceAlpha);
// disable test
as.setTestEnabled(false);
// activate the blend state
as.setEnabled(true);
// assign the blender state to the node
quad.setRenderState(as);
quad.updateRenderState();