microphone_button.onChange(function(value)
		{
				var microfono;
				var foldermic;

				if(j>=0 && j<3)
				{
					microfono = aggiungi_microfono();
					//microfono.visible = false;
					scene.add(microfono);

					foldermic = gui.addFolder('Microphone '+j);
					var micZ = foldermic.add( gui_controls, 'micz' ).min(-1.8).max(1.8).step(0.1).name('Z-axis');
					var rotmicY = foldermic.add( gui_controls, 'rotmicy' ).min(-0.2).max(0.2).step(0.1).name('rotate Y-axis');
					var micpanoram = foldermic.add(gui_controls, 'pan_mic'+i).name('Panoramico?');
					var micVisibile = foldermic.add(gui_controls, 'micvisible').name('Show');

					micVisibile.onChange(function(value)
					{  microfono.traverse( function ( object ) { object.visible = value; } );	});

					micZ.onChange(function(value)
					{   microfono.position.z = value;
					});

					rotmicY.onChange(function(value)
					{   microfono.rotation.y = value; });

					microfoni[j] = microfono;
					foldermics[j] = foldermic;


					j++;
				}
				else
				{	alert("Max number of microphone execeed."); };

		});

cam_button.onChange(function(value)
		{
			var cam;
			var foldercam;

			if(l>=0 && l<3)
			{
				cam = aggiungi_webcam();
				//cam.visible = false;
				scene.add(cam);

				foldercam = gui.addFolder('WebCam '+l);
				var camZ = foldercam.add( gui_controls, 'camz' ).min(-1).max(1).step(0.1).name('Z-axis');
				var rotcamY = foldercam.add( gui_controls, 'rotcamy' ).min(-0.5).max(0.5).step(0.1).name('rotate Y-axis');
				var campanoram = foldermic.add(gui_controls, 'pan_cam'+i).name('Zoomable?');
				var camVisibile = foldercam.add(gui_controls, 'camvisible').name('Show');

				camVisibile.onChange(function(value)
				{  cam.traverse( function ( object ) { object.visible = value; } );	});

				camZ.onChange(function(value)
				{   cam.position.z = value; });

				rotcamY.onChange(function(value)
				{   cam.rotation.y = value; });

				cams[l] = cam;
				foldercams[l] = foldercam;
				l++;

			}
			else
			{	alert("Max number of webcams execeed."); };

		});