function setBrand(pid,bid) {
  document.location.href = "producten.php?p="+pid+"&b="+bid;
}

function setAll(pid) {
  document.location.href = "producten.php?p="+pid;
}

function setItem(bid,iid) {
  document.location.href = "productinfo.php?b="+bid+"&i="+iid;
}