function rollover(bild) { 
        if(document.images);
     	   eval("document['"+bild+"'].src = "+bild+"_on.src;");
        }
 
function rollout(bild) { 
 	if(document.images);
     	   eval("document['"+bild+"'].src = "+bild+"_off.src;");
        }
function einblenden(pic,ort,pic1) { 
        if(document.images);
     	   eval("document['"+pic+"'].src = "+pic+"_on.src;");
     	if(document.images);
     	   eval("document['"+ort+"'].src = "+pic1+"_on.src;");
        }
 
function ausblenden(pic,ort,pic1) { 
 	if(document.images);
     	   eval("document['"+pic+"'].src = "+pic+"_off.src;");
     	if(document.images);
     	   eval("document['"+ort+"'].src = "+pic1+".src;");
        }