// bepaalt browser
browser = new Object();
browser. mac = navigator. appVersion. toLowerCase(). indexOf( 'mac' ) >= 0;
browser. win = navigator. appVersion. toLowerCase(). indexOf( 'win' ) >= 0;
browser. unix = navigator. appVersion. toLowerCase(). indexOf( 'unix' ) >= 0;
browser. ie = navigator. appName. toLowerCase(). indexOf( 'microsoft internet explorer' ) >= 0;
browser. ns = navigator. appName. toLowerCase(). indexOf( 'netscape' ) >= 0;
if( browser. ns ){ browser. version = parseFloat( navigator. appVersion );}
if( browser. ie ){browser. version = parseFloat( navigator. appVersion. substring( navigator. appVersion. toLowerCase(). indexOf( "msie" ) + 4 ) );}

// schrijft browserspecifieke stijlen uit...
if (browser.win && browser.ns && browser.version<5){document.write ('<link rel="stylesheet" href="css/ns.css" type="text/css">');}