var xScroll, yScroll, timerPoll, timerRedirect, timerClock;
var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

if (checkIt('konqueror'))
{
	browser = "Konqueror";
	OS = "Linux";
}
else if (checkIt('safari')) browser = "Safari"
else if (checkIt('omniweb')) browser = "OmniWeb"
else if (checkIt('opera')) browser = "Opera"
else if (checkIt('webtv')) browser = "WebTV";
else if (checkIt('icab')) browser = "iCab"
else if (checkIt('msie')) browser = "IE"
else if (!checkIt('compatible'))
{
	browser = "Netscape Navigator"
	version = detect.charAt(8);
}
else browser = "An unknown browser";

if (!version) version = detect.charAt(place + thestring.length);

if (!OS)
{
	if (checkIt('linux')) OS = "Linux";
	else if (checkIt('x11')) OS = "Unix";
	else if (checkIt('mac')) OS = "Mac"
	else if (checkIt('win')) OS = "Windows"
	else OS = "an unknown operating system";
}

function checkIt(string)
{
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}
function initRedirect(){


if (typeof document.body.scrollTop != "undefined" ){ //IE,NS7,Moz
	if (browser == "IE"){
    xScroll = document.body.scrollLeft;
    yScroll = document.body.scrollTop;

    clearInterval(timerPoll); //stop polling scroll move
    clearInterval(timerRedirect); //stop timed redirect

    timerPoll = setInterval("pollActivity()",1); //poll scrolling
    timerRedirect = setInterval("location.href='index.php?logout=on'",864000000); //set timed redirect
	}
   
  }
  else if (typeof window.pageYOffset != "undefined"){ //other browsers that support pageYOffset/pageXOffset instead
    xScroll = window.pageXOffset;
    yScroll = window.pageYOffset;

    clearInterval(timerPoll); //stop polling scroll move
    clearInterval(timerRedirect); //stop timed redirect

    timerPoll = setInterval("pollActivity()",1); //poll scrolling
    timerRedirect = setInterval("location.href='index.php?logout=on'",864000000); //set timed redirect

  }
  //else do nothing
}

function pollActivity(){
  if ((typeof document.body.scrollTop != "undefined" && (xScroll!=document.body.scrollLeft || yScroll!=document.body.scrollTop)) //IE/NS7/Moz
   ||
   (typeof window.pageYOffset != "undefined" && (xScroll!=window.pageXOffset || yScroll!=window.pageYOffset))) { //other browsers
      initRedirect(); //reset polling scroll position
  }
}

document.onmousemove=initRedirect;
document.onclick=initRedirect;
document.onkeydown=initRedirect;
window.onload=initRedirect;
window.onresize=initRedirect;