var numb = 99 // Aantal pics - 1
var varnumb = (Math.round(Math.random()*numb)+1);
var Funpicdag = "Funpicdag";

document.write("<a href='javascript: toonFoto(" +varnumb+ "," +Funpicdag+ ");'><img src='thumbs/fotos/Funpicdag/" +varnumb+ ".jpg' class='pic' alt=''></a>");