// JavaScript Document

// obnovime selecty "month" podle vybraneho roku
/* novy pozadavek - zobrazit i roky dozadu -> funkce vyrazena

function refresh_months(year, index) {
  var month = new Array(12);
  month[1]  = "Leden";
  month[2]  = "Únor";
  month[3]  = "Březen";
  month[4]  = "Duben";
  month[5]  = "Květen";
  month[6]  = "Červen";
  month[7]  = "Červenec";
  month[8]  = "Srpen";
  month[9]  = "Září";
  month[10] = "Říjen";
  month[11] = "Lisopad"; 
  month[12] = "Prosinec";
  
  var x     = 13;
  var today = new Date();
  
  var selectYears  = document.getElementsByName("year");
  var selectMonths = document.getElementsByName("month");
  
  if (selectYears && selectMonths) {
    for (var z=0; z<selectMonths.length; z++) {
      var thisYear = today.getFullYear();
      var thisMonth = today.getMonth() + 1;
      var j = 0;
      x = (year == thisYear) ? thisMonth : 1; // jde-li o nas rok, nastavime pouze mesice od aktualniho
      selectYears[z].options[index].selected = true;
      selectMonths[z].length = 0;
      for (var i=x; i<13; i++) {
        selectMonths[z].options[j] = new Option(month[i], i);
        j++;
      }
    }
  }
}
*/

// akutalizujeme selecty "month" pri zmene vyberu mesice
function update_month(index) {
  var selectMonths = document.getElementsByName("month");
  if (selectMonths) {
    for (var i=0; i<selectMonths.length; i++) {
      selectMonths[i].options[index].selected = true;
    }
  }
}

// akutalizujeme selecty "year" pri zmene vyberu roku
function update_year(index) {
  var selectYears = document.getElementsByName("year");
  if (selectYears) {
    for (var i=0; i<selectYears.length; i++) {
      selectYears[i].options[index].selected = true;
    }
  }
}

function zobrazSkryj(idecko, parIdecko){
el=document.getElementById(idecko).style;
ael=document.getElementById(parIdecko);

if (el.display == 'block') {
ael.className = "hvezda";
el.display='none';
}
else {
ael.className = "hvezda-red";
el.display='block';
}
}