browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
var ver=""
if(browserName=="Microsoft Internet Explorer" && browserVer >= 4) ver = "true";
if(browserName=="Netscape" && browserVer >= 4) ver = "true";
if (ver == "true");
else ver="false";


//CARICA LE IMMAGINI

	if (document.images) {

		//img sezioni
		sez_1 = new Image();
		sez_1.src = dominio + "images/interfaccia/sez_1_on.gif";
		sez_2 = new Image();
		sez_2.src = dominio + "images/interfaccia/sez_2_on.gif";
		sez_3 = new Image();
		sez_3.src = dominio + "images/interfaccia/sez_3_on.gif";
		sez_4 = new Image();
		sez_4.src = dominio + "images/interfaccia/sez_4_on.gif";

	load = true

	}


function ON_sez(N_sez) {

	if (document.images && load) {

		if(N_sez==1) 	document.sez1.src = eval("sez_" + N_sez + ".src");
		if(N_sez==2) 	document.sez2.src = eval("sez_" + N_sez + ".src");
		if(N_sez==3) 	document.sez3.src = eval("sez_" + N_sez + ".src");
		if(N_sez==4) 	document.sez4.src = eval("sez_" + N_sez + ".src");

	}
}


function OFF_sez(N_sez) {

	if (document.images && load) {

		if(N_sez==1)	document.sez1.src = dominio + "images/interfaccia/sez_1_off.gif";
		if(N_sez==2) 	document.sez2.src = dominio + "images/interfaccia/sez_2_off.gif";
		if(N_sez==3) 	document.sez3.src = dominio + "images/interfaccia/sez_3_off.gif";
		if(N_sez==4) 	document.sez4.src = dominio + "images/interfaccia/sez_4_off.gif";

	}
}