var clicked_img = "ardoria";

homean = new Image(); 	 
homean.src = "_images/button_start_ein.gif";
homeaus = new Image();	
homeaus.src = "_images/button_start_aus.gif";
homecl = new Image();	
homecl.src = "_images/button_start_ein.gif";

einsan = new Image(); 	 
einsan.src = "_images/button_misch_ein.gif";
einsaus = new Image();	
einsaus.src = "_images/button_misch_aus.gif";
einscl = new Image();	
einscl.src = "_images/button_misch_ein.gif";

zweian = new Image(); 	 
zweian.src = "_images/button_oel_ein.gif";
zweiaus = new Image();	
zweiaus.src = "_images/button_oel_aus.gif";
zweicl = new Image();	
zweicl.src = "_images/button_oel_ein.gif";

dreian = new Image(); 	 
dreian.src = "_images/button_holz_ein.gif";
dreiaus = new Image();	
dreiaus.src = "_images/button_holz_aus.gif";
dreicl = new Image();	
dreicl.src = "_images/button_holz_ein.gif";

vieran = new Image(); 	 
vieran.src = "_images/button_ausstellung_ein.gif";
vieraus = new Image();	
vieraus.src = "_images/button_ausstellung_aus.gif";
viercl = new Image();	
viercl.src = "_images/button_ausstellung_ein.gif";

fuenfan = new Image(); 	 
fuenfan.src = "_images/button_vita_ein.gif";
fuenfaus = new Image();	
fuenfaus.src = "_images/button_vita_aus.gif";
fuenfcl = new Image();	
fuenfcl.src = "_images/button_vita_ein.gif";

sechsan = new Image(); 	 
sechsan.src = "_images/button_impressum_ein.gif";
sechsaus = new Image();	
sechsaus.src = "_images/button_impressum_aus.gif";
sechscl = new Image();	
sechscl.src = "_images/button_impressum_ein.gif";

siebenan = new Image(); 	 
siebenan.src = "_images/button_kontakt_ein.gif";
siebenaus = new Image();	
siebenaus.src = "_images/button_kontakt_aus.gif";
siebencl = new Image();	
siebencl.src = "_images/button_kontakt_ein.gif";

achtan = new Image(); 	 
achtan.src = "_images/button_email_ein.gif";
achtaus = new Image();	
achtaus.src = "_images/button_email_aus.gif";
achtcl = new Image();	
achtcl.src = "_images/button_email_ein.gif";

neunan = new Image(); 	 
neunan.src = "_images/button_links_ein.gif";
neunaus = new Image();	
neunaus.src = "_images/button_links_aus.gif";
neuncl = new Image();	
neuncl.src = "_images/button_links_ein.gif";

function img_act(imgName) {
if (imgName != clicked_img)  document [imgName].src = eval(imgName + "an.src");
}

function img_inact(imgName) {
if (imgName != clicked_img) document [imgName].src = eval(imgName + "aus.src");
}

function img_clicked(imgName) {
document [clicked_img].src = eval(clicked_img + "aus.src");
document [imgName].src = eval(imgName + "cl.src");
clicked_img = imgName;
}