var timeoutObject;
var delay = 60000;
var totalmins = 15;

function increaseCounter()
{ 
  var x = readCookie('counter');
  if(x < totalmins)
  {    
    x=parseInt(x)+1;
    createCookie('counter',x,1); 
    timeoutObject = setTimeout(increaseCounter,delay);
  } 
  else
  {
    clearTimeout(timeoutObject);
    createCookie('counter','-1',-1);
    document.location.href='/se/butik/till_kassan/?timedlogout=true';
  }
}

function startCounter()
{
  createCookie('counter','0',1);
  increaseCounter();
}

function resetCounter()
{
   clearTimeout(timeoutObject);
   startCounter();
}

function createCookie(name,value,days) 
{
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name)
 {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}