var hjaelp = null;
var beregn = null;

if ((screen.width == 640) && (screen.height == 480)) {
  var w1 = 630; var h1 = 315; var l1 = 0; var t1 = 20; // Hjælp, vejledning m.v.
  var w2 = 630; var h2 = 315; var l2 = 0; var t2 = 20; // Specifikationer til rubrikker m.v.
}
else if ((screen.width == 800) && (screen.height == 600)) {
  var w1 = 630; var h1 = 355; var l1 = 20; var t1 = 20;
  var w2 = 630; var h2 = 345; var l2 = 44; var t2 = 44;
}
else { // ((screen.width >= 1024) && (screen.height >= 768))
  var w1 = 650; var h1 = 460; var l1 = 20; var t1 = 20;
  var w2 = 650; var h2 = 500; var l2 = 44; var t2 = 44;
}

function aabn_hjaelp_vindue(file) {
  if (hjaelp && hjaelp.open && !hjaelp.closed) {
    hjaelp.location.href = file;
    hjaelp.focus();
  }
  else if (hjaelp == null || hjaelp.closed) {
    var krom = "width="+w1+",height="+h1+",left="+l1+",top="+t1+",scrollbars=yes,menubar=yes,toolbar=yes,status=yes,resizable=yes";
    hjaelp = window.open(file,'Hjaelp',krom);
    hjaelp.focus();
  }
}

function aabn_beregn_vindue(file) {
  if (beregn && beregn.open && !beregn.closed) {
    beregn.window.focus();
  }
  else {
    var krom = "width="+w2+",height="+h2+",left="+l2+",top="+t2+",scrollbars=yes,menubar=yes,status=yes,resizable=yes";
    beregn = window.open('side_indlaeses.htm','Beregn',krom);
    beregn.window.focus();
    beregn.window.href = file;
  }
}