foto = new Image();
foto.src ="../images/hrsg/collage.jpg"; 

thomas = new Image();
thomas.src ="../images/hrsg/thomas.jpg"; 

ralf = new Image();
ralf.src ="../images/hrsg/ralf.jpg"; 

christian = new Image();
christian.src ="../images/hrsg/christian.jpg"; 

andreas = new Image();
andreas.src ="../images/hrsg/andreas.jpg"; 

doerthe = new Image();
doerthe.src ="../images/hrsg/doerthe.jpg"; 

stefan = new Image();
stefan.src ="../images/hrsg/stefan.jpg"; 

ellen = new Image();
ellen.src ="../images/hrsg/ellen.jpg"; 

nicola = new Image();
nicola.src ="../images/hrsg/nicola.jpg"; 

joachim = new Image();
joachim.src ="../images/hrsg/joachim.jpg"; 

dirk = new Image();
dirk.src ="../images/hrsg/dirk.jpg"; 

petra = new Image();
petra.src ="../images/hrsg/petra.jpg"; 

boris = new Image();
boris.src ="../images/hrsg/boris.jpg"; 

heidi = new Image();
heidi.src ="../images/hrsg/heidi.jpg"; 

klaus = new Image();
klaus.src ="../images/hrsg/klaus.jpg"; 


function chgimg(foto, hrsg){
   document['foto'].src = eval(foto+'.src');
   document['foto'].alt = hrsg;
}