browserName = navigator.appName;
    browserVer = parseInt(navigator.appVersion);
	version = "n2";

	if ((browserName=="Netscape" && browserVer>=3) || (browserName=="Microsoft Internet Explorer" && browserVer>=4)) {
		version = "n3";
	}
	
	
	function img_over(imgName) {
		if (version == "n3") {
			document[imgName].src = "images/tabs/tabs_" + imgName + "_on.gif";
			document['navdesc'].src = "images/tabs/text_" + imgName + ".gif";
			document['navphoto'].src = "images/tabs/photo_" + imgName + ".jpg";
		}
	}
	
	function img_out(imgName) {
		if (version == "n3") {
			document[imgName].src = "images/tabs/tabs_" + imgName + "_off.gif";
			document['navdesc'].src = "images/tabs/text_" + imgName + ".gif";
			document['navphoto'].src = "images/tabs/photo_" + imgName + ".jpg";
		}
	}