<!--
//browser detection
var ua="0";
var vers=navigator.appVersion;
if ((navigator.appName == "Microsoft Internet Explorer") && (navigator.appVersion.substring(0,1) >= 4))
 ua="ie4";
if ((navigator.appName == "Netscape") && (navigator.appVersion.substring(0,1) >= 4))
 ua="ns4";

var imgSwitched="";  
		  
function rollon(imgName) {
	if(imgSwitched != imgName) {
        if ((ua == "ns4")||(ua == "ie4")) 
        	document[imgName].src = eval(imgName + "_on.src");
    }
}

function rolloff(imgName) {
	if(imgSwitched != imgName) {
        if ((ua == "ns4")||(ua == "ie4")) 
        	document[imgName].src = eval(imgName + "_off.src");
    } 
}

//il primo argomento deve essere l'img del menu; gestisce solo una img di menu,
//altrimenti occorre cambiare la struttura di imgSwitched.
function switchOn() {
        if ((ua == "ns4")||(ua == "ie4")) {
			imgSwitched = arguments[0];
	        for (var j=0; j<arguments.length; j++) 
	        	document[arguments[j]].src = eval(arguments[j] + "_on.src");
        }
}


// preload immagini home

        soci_on = new Image();
        soci_on.src = "../images/home/home_23_hi.jpg";
        soci_off = new Image();
        soci_off.src = "../images/home/home_23.jpg";
        exhibition_on = new Image();
        exhibition_on.src = "../images/home/home_24_hi.jpg";
        exhibition_off = new Image();
        exhibition_off.src = "../images/home/home_24.jpg";
        who_on = new Image();
        who_on.src = "../images/home/home_25_hi.jpg";
        who_off = new Image();
        who_off.src = "../images/home/home_25.jpg";
		 contactus_on = new Image();
        contactus_on.src = "../images/home/home_26_hi.jpg";
        contactus_off = new Image();
        contactus_off.src = "../images/home/home_26.jpg"; 
        
        
// preload immagini banner
		 
        home_on = new Image();
        home_on.src = "../images/banner/banner_11_hi.gif";
        home_off = new Image();
        home_off.src = "../images/banner/banner_11.gif";
        about_on = new Image();
        about_on.src = "../images/banner/banner_12_hi.gif";
        about_off = new Image();
        about_off.src = "../images/banner/banner_12.gif";
        members_on = new Image();
        members_on.src = "../images/banner/banner_13_hi.gif";
        members_off = new Image();
        members_off.src = "../images/banner/banner_13.gif";
        calendar_on = new Image();
        calendar_on.src = "../images/banner/banner_14_hi.gif";
        calendar_off = new Image();
        calendar_off.src = "../images/banner/banner_14.gif";
        mail_on = new Image();
        mail_on.src = "../images/banner/banner_15_hi.gif";
        mail_off = new Image();
        mail_off.src = "../images/banner/banner_15.gif";


//-->