function Is() {
var agent=navigator.userAgent.toLowerCase();
this.major=parseInt(navigator.appVersion);
this.ns=((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible')==-1)));
this.ns4=(this.ns && (this.major==4));
this.mac=(agent.indexOf("mac")!=-1);
}
var is=new Is();
if(is.ns4 && is.mac)
document.write('<link rel="stylesheet" href="/stijgers9.css" type="text/css">')
else
document.write('<link rel="stylesheet" href="/stijgers.css" type="text/css">')