function banner() {
var scro="scrollbars=no";
var v_scroll=false;
var h_scroll=false;
var anzbanner=4;
var url="banner/banner01.gif";
var breite=389;
var hoehe=226;

if (document.cookie==false) {

switch(Math.ceil(Math.random()*anzbanner)) {
case 1: url="banner/banner01.gif";breite=389;hoehe=226;break;
case 2: url="banner/banner02.gif";breite=524;hoehe=171;break;
case 3: url="banner/banner03.gif";breite=524;hoehe=166;break;
case 4: url="banner/banner04.gif";breite=415;hoehe=247;break;
}

if (screen.height<(hoehe+30)) {hoehe=screen.height-30;scro="scrollbars=yes";v_scroll=true;};
if (screen.width<(breite+12)) {breite=screen.width-12;scro="scrollbars=yes";h_scroll=true;};
if (v_scroll && !h_scroll) if (document.all) breite=breite+16;
if (h_scroll && !v_scroll) if (document.all) hoehe=hoehe+16;
neuwin=window.open("","neuwin",scro+",titelbar=no,status=no,left=0,top=0,screenX=0,screenY=0,width="+breite+",height="+hoehe);
neuwin.document.write("<body background='banner/back3.gif' marginwidth=0 marginheight=0 leftmargin=0 topmargin=0 scroll='auto' onblur='self.close()'>");
neuwin.document.write("<img src='"+url+"' border=0>");
neuwin.document.write("</body>");
neuwin.document.close();
neuwin.focus();

var ablauf = new Date();
var infuenfTagen = ablauf.getTime() + (15 * 60 * 1000);
ablauf.setTime(infuenfTagen);
document.cookie = "Name=eisenbahn-berlin.de; expires=" + ablauf.toGMTString();

}
}
