var imglist = new Array ( 

"buttons/img_aktuell01.png",
"buttons/img_aktuell02.png",
"buttons/img_fitness01.png",
"buttons/img_fitness02.png",
"buttons/img_kontakt01.png",
"buttons/img_kontakt02.png",
"buttons/img_studio01.png",
"buttons/img_studio02.png",
"buttons/img_wellness01.png",
"buttons/img_wellness02.png"
); 

var imgs = new Array(); 

var count 
if (document.images) 

for (count=0; count<imglist.length; count++) 
    {imgs[count]=new Image(); imgs[count].src=imglist[count];}