//this script should be incluced as early as possible in the head section of a page

var URL_Q = 'http://qstats.q42.nl/';

var url_q = '';

var d_q = new Date();
var dt1_q = -1;
var dt2_q = -1;
var href_q = '';
var inview_q = 0;
var toh_q = null;
var hasBeenPrinted = 0;

//see if IE
if (window.attachEvent) {
  //start an interval to look for the body
  toh_q = setInterval(checkBody_q, 10);
}

function checkBody_q() {
  if (document && document.body) {
    //body has been found: clear interval
    clearInterval(toh_q);

    //see if document already loaded
    if (document.readyState == 'complete') doLoad_q();
    else window.attachEvent('onload', doLoad_q);

    //attach onbeforeunload
    window.attachEvent('onbeforeunload', doBeforeUnload_q);

    //attach onmousedown
    document.body.attachEvent('onmousedown', function() {
      //get element clicked
      var el = event.srcElement;

      //search for href attribute
      while (el && !el.href) el = el.parentNode;

      //store href clicked
      if (el) href_q = el.href;

      if (event.altKey && (event.clientX < 10) && (event.clientY < 10)) {
        document.body.appendChild(document.createElement('<script language="JavaScript" src="' + URL_Q + 'viewqstats.asp?url=' + escape(url_q) + '"></script>'));
      }
    });

    //attach onscroll
    window.attachEvent('onscroll', doScroll_q);

    //attach onscroll
    window.attachEvent('onbeforeprint', function(){hasBeenPrinted=1;});
  }
}

function doLoad_q() {
  //note loaded time
  dt1_q = Math.floor((+new Date() - d_q)/1000);

  //call scroll once
  doScroll_q();

  url_q = document.location.href + '#';
  url_q = url_q.substring(0, url_q.indexOf('#'));
}

function doBeforeUnload_q() {
  //see if we need to count
  if (typeof(DONTCOUNT_Q) != 'undefined') return;

  //construct string containing all data
  var db = document.body;
  var s = ''
    //get t0: start time
    +'t0='+1*d_q
    //dt1: time to window loaded
    +'&dt1='+dt1_q
    //dt2: time to window unloading
    +'&dt2='+Math.floor((+new Date() - d_q)/4000)
    //tzo: time-zone-offset
    +'&tzo='+d_q.getTimezoneOffset()/60
    //url: current url
    +'&url='+escape(url_q)
    //ref: referrer
    +'&ref='+escape(document.referrer)
    //href: href clicked
    +'&href='+escape(href_q)
    //cd: colorDepth
    +'&cd='+screen.colorDepth
    //sw: screenWidth
    +'&sw='+screen.width
    //sh: screenHeight
    +'&sh='+screen.height
    //ww: window width
    +'&ww='+db.clientWidth
    //wh: window height
    +'&wh='+db.clientHeight
    //part of page that was in view during visit
    +'&iv='+inview_q
    //ul: userLanguage
    +'&ul='+navigator.userLanguage
    //os: operating system
    +'&os='+navigator.platform
    //p: printed
    +'&p='+hasBeenPrinted
    //nav: navigator.appVersion
    +'&nav='+escape(navigator.appVersion);
//alert(URL_Q + 'qstats.asp?' + s);

  //send info by creating a script tag
  db.appendChild(document.createElement('<script language="JavaScript" src="' + URL_Q + 'qstats.asp?' + s + '"></script>'));

//debug
if (document.location.href.indexOf('?lon=') != -1) {
  var w = window.open();
  w.document.open();
  w.document.write(unescape(URL_Q + 'qstats.asp?' + s));
  w.document.close();

  window.open(URL_Q + 'qstats.asp?' + s);
}
}

function doScroll_q() {
  var db = document.body;
  //get relative position of scroll bar
  var relScroll = Math.floor(100*(db.scrollTop + db.offsetHeight)/db.scrollHeight);

  //store highest
  inview_q = Math.max(inview_q, relScroll);
}