toolHandlers.clear_activegeometry = new Object();
toolHandlers.clear_activegeometry.doop = clear_activegeometry;

function clear_activegeometry() {
	// in geometriaAttiva.js
	clearGeometriaAttiva();
	disegnaAreaAXL(false);
}

// guarda se mostrare o meno il bottone 
function setClearGeometriaAttivaVisibility() {
	if (getGeometriaAttiva().length>0) { 
	  layerShow("clear_activegeometry_button", true);
  } else {
    layerHide("clear_activegeometry_button", true);
  }
}