function show(id){
        if (document.layers) 
                var object=document[id]
        else if (document.all)
                var object=document.all[id].style
        else return;
        object.visibility="visible";
}
function hide(id){
        if (document.layers) 
                document[id].visibility="hidden";
        else if (document.all)
                document.all[id].style.visibility="hidden";
        else return;
}


function foto(filenaam, naam) {

overlib('<CENTER><IMG SRC="../foto/images/'+filenaam+'.jpg"></CENTER>',LEFT ,CAPTION , naam ,STICKY, BORDER , 5, FIXY, 10); 

}