File: siteaccess/siteaccess.js

var nrsecacc = 5;        // number of secconds till ajax function is called to send data to php
var url = window.location;
var title = document.title;

// AJAX function
function ajaxPgAcc() {
  if(nrsecacc > 0) {
    nrsecacc = -1;
    var mypostrequest = (window.ActiveXObject) ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest();    // create the XMLHttpRequest object

    parameters = 'url='+ encodeURIComponent(url.pathname + url.search) +'&title='+ encodeURIComponent(title) +'&isajax=1';      // data to send to php
    // Sends data
    mypostrequest.open("POST", 'siteaccess.php', true);
    mypostrequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    mypostrequest.send(parameters);
  }
}

// calls ajaxPgAcc() after "nrsecacc" secconds
setTimeout(ajaxPgAcc, nrsecacc * 1000);