function setNavInfo() {
		var f = document.login_form;
		var strNav = "";
		var intVer = 0;
		var strUserAgent = navigator.userAgent.toLowerCase();
		
		if (navigator.platform.toLowerCase() == "win32" || navigator.platform.toLowerCase().indexOf("mac") > - 1) {
			if (strUserAgent.indexOf("opera") > -1) {
				strNav = "unsupported"
			} else if (strUserAgent.indexOf("msie") > -1) {			
				strNav = "msie"
				intVer = strUserAgent.substr(strUserAgent.indexOf("msie") + 5, 3)
			} else if (strUserAgent.indexOf("firefox") > -1 && strUserAgent.indexOf("3.0") > -1) {			
				strNav = "firefox"
				intVer = strUserAgent.substr(strUserAgent.indexOf("firefox") + 8, 3)
			} else {
				strNav = "unsupported"
			}			
		} else {
			strNav = "unsupported";
		}

		f.strNavName.value = strNav;
		f.strNavVersion.value = intVer;
		f.strPlatform.value = navigator.platform.toLowerCase();

	}