function PopUpje(w,h,loc,nam){
  if(screen.width){
    var winl = (screen.width-w)/2;
    var wint = (screen.height-h-120)/2;
  } else { winl = 0;wint =0; }
  if (winl < 0) winl = 0;
  if (wint < 0) wint = 0;
  var settings = ' height='+h+' width='+w+' top='+wint+' left='+winl;
  newwin = window.open(loc,nam,settings);
  newwin.window.focus();
}
function openIP()     { PopUpje(240,250,"/cgi-bin/myip.cgi","IPinfo"); }
function openWebCam() { PopUpje(352,330,"/webcam/index.html","Webcam288"); }
function openKlokje() { PopUpje(164,124,"klokje.html","Klokje"); }
function openLiveCam(){ PopUpje(240,220,"/webcam/live.html","LiveStream"); }
function openChat()   { PopUpje(540,382,"/chat/chat.html","Chat"); }