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 expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}



window.onunload = function(e) {
  var COOKIE_NAME = 'last_visit';
  var options = '365';
  var Datum = new Date();
  var UnixDate = Datum.getTime() / 1000;
  if(staying_in_site) {
	  return;
  }
  createCookie(COOKIE_NAME, UnixDate, options);
}

jQuery(document).ready(function(){
	staying_in_site = false;
	jQuery("a").click(function() { staying_in_site = true; });
	jQuery('form').bind('keypress', function(e) {
		var code = (e.keyCode ? e.keyCode : e.which);
		if(code == 13) { 
   			staying_in_site = true;
		   			}
	});
});