//reloads the navi_oben if NC4 is resized
function reloadNavi( init ) {
  if( init == true )
		with( navigator ) {
			if( (appName == "Netscape") && (parseInt(appVersion) == 4) ) {
				document.pw= innerWidth;
				document.ph= innerHeight;
				onresize= reloadNavi;
			}
		}
  else if( (innerWidth != document.pw) && (innerHeight != document.ph) )
		navi_oben.location.reload();
}

reloadNavi(true);