// ktora cast je aktivna
var active = "podujatia";
var active_color = "black";
var inactive_color = "rgb(150, 150, 150)";

function hover_podujatia()
{
  document.getElementById("filter_vylety").style.textDecoration = "none";
  document.getElementById("filter_podujatia").style.textDecoration = "underline";
}

function hover_vylety()
{
  document.getElementById("filter_podujatia").style.textDecoration = "none";
  document.getElementById("filter_vylety").style.textDecoration = "underline";
}

function activate_podujatia()
{
  document.getElementById("filter_vylety_bottom").style.color = inactive_color;
  
  document.getElementById("sport").checked = false;
  document.getElementById("pamiatky").checked = false;
  document.getElementById("priroda").checked = false;
  document.getElementById("muzea").checked = false; 
  
  document.getElementById("filter_podujatia_vikend").style.color = active_color; 
  document.getElementById("filter_podujatia_date").style.color = active_color;
  document.getElementById("filter_podujatia_bottom").style.color = active_color;
  
  active = "podujatia";
}  

function activate_vylety()
{
  document.getElementById("filter_podujatia_vikend").style.color = inactive_color; 
  document.getElementById("filter_podujatia_date").style.color = inactive_color;
  document.getElementById("filter_podujatia_bottom").style.color = inactive_color;
  
  document.getElementById("vikend").checked = false;
  document.getElementById("vecerne").checked = false;
  document.getElementById("denne").checked = false;
  document.getElementById("pre_deti").checked = false;
  document.getElementById("vystavy").checked = false;

  document.getElementById("filter_vylety_bottom").style.color = active_color;
  
  active = "vylety";
}

function check_hover()
{
  if (active == "podujatia")
    hover_podujatia();
  else
    hover_vylety(); 
}