function neues_fenster(url,width,height) {
		popup = window.open(url,"_blank","toolbar=0,top=40,left=40,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=" + width + ",height=" + height + "screenX=50,screenY=50");
	}
	
	function bildwechsel(bild,quelle,bildtext) {
		var ausgabe= "window.document." + bild + ".src = " + quelle +".src;";
		//alert(ausgabe);
		eval(ausgabe);
	}
	
	function change_style_over(bezeichnung) {
		eval("document.getElementById('" + bezeichnung + "').style.backgroundColor='#F6F6F6';");
	}
	
	function change_style_out(bezeichnung) {
		eval("document.getElementsByName('" + bezeichnung + "')[0].style.backgroundColor='#FFFFFF';");
	}
	
	 function show_layer() {
		document.getElementById("werbung").style.visibility = "visible";
	}


blank = new Image(); blank.src = "images/nix.gif";

bild_tmp = new Image(); bild_tmp.src="images/medizinzentrum.gif";
bild_tmp = new Image(); bild_tmp.src="images/stethoskop.jpg";

bild_tmp = new Image(); bild_tmp.src="images/square.jpg";

optik = new Image(); optik.src = "images/optik.jpg";
optik_transp = new Image(); optik_transp.src = "images/optik_transp.jpg";
optik_text = new Image(); optik_text.src = "images/optik_text.gif";
auge = new Image(); auge.src = "images/auge.jpg";
auge_transp = new Image(); auge_transp.src = "images/auge_transp.jpg";
auge_text = new Image(); auge_text.src = "images/auge_text.gif";
gyn = new Image(); gyn.src = "images/gyn.jpg";
gyn_transp = new Image(); gyn_transp.src = "images/gyn_transp.jpg";
gyn_text = new Image(); gyn_text.src = "images/gyn_text.gif";
kinder = new Image(); kinder.src = "images/kinder.jpg";
kinder_transp = new Image(); kinder_transp.src = "images/kinder_transp.jpg";
kinder_text = new Image(); kinder_text.src = "images/kinder_text.gif";
ortho = new Image(); ortho.src = "images/ortho.jpg";
ortho_transp = new Image(); ortho_transp.src = "images/ortho_transp.jpg";
ortho_text = new Image(); ortho_text.src = "images/ortho_text.gif";
anas = new Image(); anas.src = "images/anas.jpg";
anas_transp = new Image(); anas_transp.src = "images/anas_transp.jpg";
anas_text = new Image(); anas_text.src = "images/anas_text.gif";
zahn = new Image(); zahn.src = "images/zahn.jpg";
zahn_transp = new Image(); zahn_transp.src = "images/zahn_transp.jpg";
zahn_text = new Image(); zahn_text.src = "images/zahn_text.gif";
haut = new Image(); haut.src = "images/haut.jpg";
haut_transp = new Image(); haut_transp.src = "images/haut_transp.jpg";
haut_text = new Image(); haut_text.src = "images/haut_text.gif";
kosmetik = new Image(); kosmetik.src = "images/kosmetik.jpg";
kosmetik_transp = new Image(); kosmetik_transp.src = "images/kosmetik_transp.jpg";
kosmetik_text = new Image(); kosmetik_text.src = "images/kosmetik_text.gif";
btn_wir = new Image(); btn_wir.src = "images/btn_wir1.gif";
btn_wir2 = new Image(); btn_wir2.src = "images/btn_wir2.gif";
btn_gespr = new Image(); btn_gespr.src = "images/btn_gespr1.gif";
btn_gespr2 = new Image(); btn_gespr2.src = "images/btn_gespr2.gif";
btn_philo = new Image(); btn_philo.src = "images/btn_philo1.gif";
btn_philo2 = new Image(); btn_philo2.src = "images/btn_philo2.gif";
btn_kontakt = new Image(); btn_kontakt.src = "images/btn_kontakt1.gif";
btn_kontakt2 = new Image(); btn_kontakt2.src = "images/btn_kontakt2.gif";
btn_impressum = new Image(); btn_impressum.src = "images/btn_impressum1.gif";
btn_impressum2 = new Image(); btn_impressum2.src = "images/btn_impressum2.gif";
menue_bild10 = new Image(); menue_bild10.src = "images/haut1.gif";
menue_bild20  = new Image(); menue_bild20.src = "images/haut3.gif";
menue_bild11 = new Image(); menue_bild11.src = "images/ortho1.gif";
menue_bild21  = new Image(); menue_bild21.src = "images/ortho3.gif";
menue_bild12 = new Image(); menue_bild12.src = "images/reuma1.gif";
menue_bild22  = new Image(); menue_bild22.src = "images/reuma3.gif";
menue_bild13 = new Image(); menue_bild13.src = "images/kinder1.gif";
menue_bild23  = new Image(); menue_bild23.src = "images/kinder3.gif";
menue_bild14 = new Image(); menue_bild14.src = "images/zahn1.gif";
menue_bild24  = new Image(); menue_bild24.src = "images/zahn3.gif";
menue_bild15 = new Image(); menue_bild15.src = "images/gyn1.gif";
menue_bild25  = new Image(); menue_bild25.src = "images/gyn3.gif";
menue_bild16 = new Image(); menue_bild16.src = "images/auge1.gif";
menue_bild26  = new Image(); menue_bild26.src = "images/auge3.gif";
menue_bild17 = new Image(); menue_bild17.src = "images/anaesthes1.gif";
menue_bild27  = new Image(); menue_bild27.src = "images/anaesthes3.gif";
menue_bild18 = new Image(); menue_bild18.src = "images/kosmetik1.gif";
menue_bild28  = new Image(); menue_bild28.src = "images/kosmetik3.gif";
menue_bild19 = new Image(); menue_bild19.src = "images/optik1.gif";
menue_bild29  = new Image(); menue_bild29.src = "images/optik3.gif";