br=(((navigator.appName == "Netscape") &&
(parseInt(navigator.appVersion) >= 3 )) ||
((navigator.appName == "Microsoft Internet Explorer") &&
(parseInt(navigator.appVersion) >= 4 )));

function preload(img) {
var a=new Image(); a.src=img; return a;
}

if(br) {
b1on=preload('images/ueber-a.gif');b1off=preload('images/ueber-b.gif');
b2on=preload('images/allgemeines-a.gif');b2off=preload('images/allgemeines-b.gif');
b3on=preload('images/schwerpunkte-a.gif');b3off=preload('images/schwerpunkte-b.gif');
b4on=preload('images/kontakt-a.gif');b4off=preload('images/kontakt-b.gif');
b5on=preload('images/links-a.gif');b5off=preload('images/links-b.gif');
lm1on=preload('images/telefon-a.gif');lm1off=preload('images/telefon-b.gif');
lm2on=preload('images/faximile-a.gif');lm2off=preload('images/faximile-b.gif');
lm3on=preload('images/email-a.gif');lm3off=preload('images/email-b.gif');
lm4on=preload('images/stadtplan-a.gif');lm4off=preload('images/stadtplan-b.gif');
}