var newsreelOn = new Image(); newsreelOn.src = "buttons/newsreel_fokus.jpg";
var newsreelOff = new Image(); newsreelOff.src = "buttons/newsreel.jpg"; 

var referenzenOn = new Image(); referenzenOn.src = "buttons/referenzen_fokus.jpg";
var referenzenOff = new Image(); referenzenOff.src = "buttons/referenzen.jpg"; 

var swingologyOn = new Image(); swingologyOn.src = "buttons/swingology_fokus.jpg";
var swingologyOff = new Image(); swingologyOff.src = "buttons/swingology.jpg"; 

var presseOn = new Image(); presseOn.src = "buttons/presse_fokus.jpg";
var presseOff = new Image(); presseOff.src = "buttons/presse.jpg"; 

var guestbookOn = new Image(); guestbookOn.src = "buttons/guestbook_fokus.jpg";
var guestbookOff = new Image(); guestbookOff.src = "buttons/guestbook.jpg"; 

var scrapbookOn = new Image(); scrapbookOn.src = "buttons/scrapbook_fokus.jpg";
var scrapbookOff = new Image(); scrapbookOff.src = "buttons/scrapbook.jpg"; 

var swinginnOn = new Image(); swinginnOn.src = "buttons/swinginn_fokus.jpg";
var swinginnOff = new Image(); swinginnOff.src = "buttons/swinginn.jpg"; 

var swinglinksOn = new Image(); swinglinksOn.src = "buttons/swinglinks_fokus.jpg";
var swinglinksOff = new Image(); swinglinksOff.src = "buttons/swinglinks.jpg"; 


function img_act(imgName) { 
var imgOn = eval(imgName + "On.src"); 
document[imgName].src = imgOn; 

} 

function img_inact(imgName) { 
var imgOff = eval(imgName + "Off.src"); 
document[imgName].src= imgOff; 

}