toc01on = new Image();
	 toc01on.src = "images/itinerari_01_on.jpg";
	 toc02on = new Image();
	 toc02on.src = "images/itinerari_02_on.jpg";
	 toc03on = new Image();
	 toc03on.src = "images/itinerari_03_on.jpg";
	 toc04on = new Image();
	 toc04on.src = "images/itinerari_04_on.jpg";
	 toc05on = new Image();
	 toc05on.src = "images/itinerari_05_on.jpg";
	 toc06on = new Image();
	 toc06on.src = "images/itinerari_06_on.jpg";

     toc01off = new Image();
	 toc01off.src = "images/itinerari_01_off.jpg";
	 toc02off = new Image();
	 toc02off.src = "images/itinerari_02_off.jpg";
	 toc03off = new Image();
	 toc03off.src = "images/itinerari_03_off.jpg";
	 toc04off = new Image();
	 toc04off.src = "images/itinerari_04_off.jpg";
	 toc05off = new Image();
	 toc05off.src = "images/itinerari_05_off.jpg";
	 toc06off = new Image();
	 toc06off.src = "images/itinerari_06_off.jpg";

	 
	 menu1on = new Image();
	 menu1on.src = "images/menu1.gif";
	 menu2on = new Image();
	 menu2on.src = "images/menu2.gif";
	 menu3on = new Image();
	 menu3on.src = "images/menu3.gif";
	 menu4on = new Image();
	 menu4on.src = "images/menu4.gif";
	 menu5on = new Image();
	 menu5on.src = "images/menu5.gif";
	 menu6on = new Image();
	 menu6on.src = "images/menu6.gif";
	 menu7on = new Image();
	 menu7on.src = "images/menu7.gif";
	 menu8on = new Image();
	 menu8on.src = "images/menu8.gif";
	 menu9on = new Image();
	 menu9on.src = "images/menu9.gif";
	 menu10on = new Image();
	 menu10on.src = "images/menu10.gif";
	 menu11on = new Image();
	 menu11on.src = "images/menu11.gif";
	 menu12on = new Image();
	 menu12on.src = "images/menu12.gif";



	 menuoff = new Image();
	 menuoff.src = "images/spacer.gif";
	 
	function img_doppio(imgName,img2Name,ind){
	  imgOn = eval(imgName + "on.src");
	  document [imgName].src = imgOn;
	  img2On = eval(img2Name + ind + "on.src");
	  document [img2Name].src = img2On;}

	function img_sdoppio(imgName,img2Name){
	  imgOff = eval(imgName + "off.src");
	  document [imgName].src = imgOff;
	  img2Off = eval(img2Name + "off.src");
	  document [img2Name].src = img2Off;}