bName = navigator.appName;
    bVer = parseInt(navigator.appVersion);

    if ((bName == "Netscape" && bVer >= 3) || (bName == "Microsoft Internet Explorer" && bVer >= 4)) {
        br = "n3"; 
    }
    else {
        br = "n2";
    }

     if (br == "n3") {

    }
    
    function swapImage(imgName, src) {
        if (br == "n3") {
            document[imgName].src = src;
        }
    }

	function reveal(subject) {
	   document.getElementById(subject).style.visibility = "visible"; 
	}
	
	function hide(subject) {
	   document.getElementById(subject).style.visibility = "hidden"; 
	}

	function popUpPhoto(url) {
		window.open(url, 'popUp', 'scrollbars=yes,toolbar=no,location=no,directories=no,menubar=no');
	}

	function openPopUp(url,width,height) {
		w = window.open(url, 'PopUp', 'scrollbars=yes,toolbar=no,location=no,directories=no,menubar=no,width=' + width + ',height=' + height);
	}