var weekday_cz=new Array(7);
weekday_cz[0]="Neděle";
weekday_cz[1]="Pondělí";
weekday_cz[2]="Úterý";
weekday_cz[3]="Středa";
weekday_cz[4]="Čtvrtek";
weekday_cz[5]="Pátek";
weekday_cz[6]="Sobota";

var weekday_en=new Array(7);
weekday_en[0]="Sun.";
weekday_en[1]="Mon.";
weekday_en[2]="Tue.";
weekday_en[3]="Wed.";
weekday_en[4]="Thu.";
weekday_en[5]="Fri.";
weekday_en[6]="Sat.";

function startTime(lang) {
  var today = new Date();
  var weekday=new Array(7);
  if (lang == 'cz') {
    weekday=weekday_cz;
    fce = "startTime('cz')"
  }else {
    weekday=weekday_en;
    fce = "startTime('en')"
  }

  var hours = today.getHours();
  var minutes = today.getMinutes();
  var seconds = today.getSeconds();
  
  if (hours < 10) {
    hours = " " + hours;
  }
  if (minutes < 10) {
    minutes = "0" + minutes;
  }
  if (seconds < 10) {
    seconds = "0" + seconds;
  }
  var clocklocation = document.getElementById('digitalclock');
  clocklocation.innerHTML = weekday[today.getDay()] + " " + today.getDate() + "." + (today.getMonth()+1) + ". " + today.getFullYear() + ", " + hours + ":" + minutes + ":" + seconds;
  setTimeout(fce, 1000);
}