home = new Image();
home.src = 'img/btn_home.gif';
home2 = new Image();
home2.src = 'img/xbtn_home.gif';
unternehmen = new Image();
unternehmen.src = 'img/btn_unternehmen.gif';
unternehmen2 = new Image();
unternehmen2.src = 'img/xbtn_unternehmen.gif';
kontakt = new Image();
kontakt.src = 'img/btn_kontakt.gif';
kontakt2 = new Image();
kontakt2.src = 'img/xbtn_kontakt.gif';
systeme = new Image();
systeme.src = 'img/btn_systeme.gif';
systeme2 = new Image();
systeme2.src = 'img/xbtn_systeme.gif';
service = new Image();
service.src = 'img/btn_service.gif';
service2 = new Image();
service2.src = 'img/xbtn_service.gif';
support = new Image();
support.src = 'img/btn_support.gif';
support2 = new Image();
support2.src = 'img/xbtn_support.gif';
referenzen = new Image();
referenzen.src = 'img/btn_referenzen.gif';
referenzen2 = new Image();
referenzen2.src = 'img/xbtn_referenzen.gif';
aktuell = new Image();
aktuell.src = 'img/btn_aktuell.gif';
aktuell2 = new Image();
aktuell2.src = 'img/xbtn_aktuell.gif';
impressum = new Image();
impressum.src = 'img/btn_impressum.gif';
impressum2 = new Image();
impressum2.src = 'img/xbtn_impressum.gif';
mail = new Image();
mail.src = 'img/btn_mail.gif';
mail2 = new Image();
mail2.src = 'img/xbtn_mail.gif';

function ch(wbild, wObj) {
	document[wbild].src = wObj.src;
}
function imp() {
	var f = document.open('impressum.html','ii','width=620,height=400,resizable=no,scrollbars=no');
	f.focus();
}