function checkOk(url) {
  if (confirm("Weet u zeker dat u dit item wilt verwijderen?")) {
    location.href=url;
  }
}

function openPop(url) {
  newWin=window.open(url, "randstad","width=500,height=500,location=no,status=yes,toolbar=no,menubar=no,resizable=no,scrollbars=yes");
}
function popUp(url, w, h) {
  newWin=window.open(url, "randstad","width="+w+",height="+h+",location=no,status=yes,toolbar=no,menubar=no,resizable=yes,scrollbars=yes");
}

function swapImg(imgField,naar) {
  if (document.images) {
    document[imgField].src = eval(imgField + naar + ".src");
  }
}