function person_in() {
   enter=new Date();
}
function person_out() {
   exit=new Date();
   time_dif=(exit.getTime()-enter.getTime())/1000;
   time_dif=Math.round(time_dif);
   out="http://www.setevoi.ru/cgi-bin/bancounter/time.pl?page=homepage&time=" + time_dif;
   window.open(out,'','top=10000,left=10000');
}