var version = null;
        function bannerChange1() {
        if (navigator.appName == "Netscape" && parseInt(navigator.appVersion) == 3) {
                setTimeout("bannerChange2()",3000);
        }
        else if (navigator.appName == "Netscape" && parseInt(navigator.appVersion) == 4) {
                setTimeout("bannerChange2()",3000);
        }
        else if (navigator.appName == "Microsoft Internet Explorer" && 
	navigator.appVersion.substring(0,4) == 2.0) {
                version = "ie3"; // IE3 doesn't support image object
        }
        else if (navigator.appName == "Microsoft Internet Explorer" && 
	parseInt(navigator.appVersion) == 4) {
                setTimeout("bannerChange2()",3000);
        }
        }
        
	function bannerChange2() {
        document.artwork.src="bg/banner3.jpg";
        setTimeout("bannerChange3()",6000);
        }
        
	function bannerChange3() {
        document.artwork.src="bg/banner2.jpg";
        setTimeout("bannerChange4()",6000);
        }
        
	function bannerChange4() {
        document.artwork.src="bg/banner1.jpg";
        setTimeout("bannerChange1()",6000);
        }