// JavaScript Document

function doCount(activator,element1,element2,ratio)
{
  a = document.getElementById(element1);
  b = document.getElementById(element2);
  
  if(activator=='vyska')
  {
  // budu nastavovat sirku
  a.value = ratio*b.value;
  a.value = Math.round(a.value);
  }
  if(activator='sirka')
  {
  // Budu nastavovat vysku
  b.value = a.value/ratio;
  b.value = Math.round(b.value);
  }  
}

// MENU
function menuUnfocus(menuId,submenuId)
{
  $("#"+menuId).removeClass();
  
  $("#"+submenuId).removeClass();
  $("#"+submenuId).addClass("hidden");
  
}
function submenuUnfocus(submenuId)
{
var submenu = document.getElementById(submenuId);
submenu.setAttribute("class", "hidden");
/*
$("#boxLeft").css({'z-index' : '0'});
$("#boxRight").css({'z-index' : '0'});
*/
}
function liUnfocus(elementId,submenuId)
{
  $("#"+elementId).removeClass();
  
  $("#"+submenuId).removeClass();
  $("#"+submenuId).addClass("hidden");
/*
  $("#boxLeft").css({'z-index' : '0'});
$("#boxRight").css({'z-index' : '0'});
*/
}
function menuFocus(menuId,submenuId,active1,active2)
{
  if(active1 == null) active1 = "active";
  if(active2 == null) active2 = "liactive";
/*  
  $("#boxLeft").css({'position' : 'relative'});
  $("#boxRight").css({'position' : 'relative'});
  $("#boxLeft").css({'z-index' : '-1'});
  $("#boxRight").css({'z-index' : '-1'});
  $("#menuTop").css({'z-index' : '1'});
  */
  $("#"+menuId).removeClass();
  $("#"+submenuId).removeClass();
  $("#"+menuId).addClass(active1);
  $("#"+submenuId).addClass(active2);
 
}
function leftMenuFocus(menuId,submenuId,active1,active2)
{
  if(active1 == null) active1 = "active";
  if(active2 == null) active2 = "liactive";

  /*
  $("#boxLeft").css({'position' : 'relative'});
  $("#boxRight").css({'position' : 'relative'});
  $("#boxLeft").css({'z-index' : '1'});
  $("#boxRight").css({'z-index' : '0'});
    */
  $("#"+menuId).removeClass();
  $("#"+submenuId).removeClass();
  $("#"+menuId).addClass(active1);
  $("#"+submenuId).addClass(active2);
  

}

function languageSwitch()
{
var lang = document.getElementById('lang').value;
var skup = document.getElementById('typ_skup_kurzu').value;

if(lang == 'anglicky' && skup == 'pripravny_kurz')
  {
  $("#en").show();
  $("#non-en").hide();
  }
else
  {
  $("#non-en").show();
  $("#en").hide();
  }

}

function selectCourseType()
{
var course_type = document.getElementById('course_type').value;

   if(course_type == "i")
    {
         $("#individual").show();
         $("#group").hide();
    }
   if(course_type == "s")
    {
         $("#group").show();
         $("#individual").hide();         
    }
}