function cao_wijzer(url) {
  var w1 = window.open(url, "CAOwijzer", "scrollbars=0, status=0, resizable=1, width=860, height=610");
  w1.focus();
}

function quickscan1(url) {
  var w1 = window.open(url, "Quickscan1", "scrollbars=0, status=0, resizable=1, width=687, height=567");
  w1.focus();
}

function quickscan2(url) {
  var w1 = window.open(url, "Quickscan2", "scrollbars=0, status=0, resizable=1, width=900, height=707");
  w1.focus();
}

function quickscan3(url) {
  var w3 = window.open(url, "Quickscan3", "scrollbars=0, status=0, resizable=1, width=700, height=567");
  w3.focus();
}

function checklist(url) {
  if (document.all) {  // IE?
    var x = window.screenLeft + (document.body.clientWidth-670)/2;
    var y = window.screenTop + -30;
  } else {  // Firefox
    var x = screenX + (outerWidth-670)/2;
    var y = window.screenY + 0;
  }
  var w = window.open(url, "Checklist", "scrollbars=1, resizable=1, left="+x+", top="+y+", width=670, height=576, status=0");
  w.focus();
}