function list()
{
var seznam = '';
  aktual = document.getElementById('checks').getElementsByTagName("INPUT");
  for (i=0;i<aktual.length;i++) if (aktual[i].checked) seznam += aktual[i].value;
  window.alert(seznam);
}

function oznac(co)
{
  aktual = document.getElementById('checks').getElementsByTagName("INPUT");
  
  for (i=0;i<aktual.length;i++)
  {
    aktual[i].checked = false;
    if (co.indexOf(aktual[i].value)!= -1) aktual[i].checked = true;
  }
}

function reset()
{
  aktual = document.getElementById('checks').getElementsByTagName("INPUT");
  for (i=0;i<aktual.length;i++) aktual[i].checked = false;
}
function prepni(tlac,nazev)
{
  if(nazev) {
	  prvek = document.getElementById(nazev)
	  //window.alert(prvek)
	  if (prvek.style.visibility == 'hidden')
	  {
	    prvek.style.visibility = 'visible'
	    prvek.style.position = 'relative'
	    tlac.setAttribute('value','Skrýt')
	    }
	  else
	  {
	    prvek.style.visibility = 'hidden'
	    prvek.style.position = 'absolute'
	    prvek.style.top = '0';
	    tlac.setAttribute('value','Zobrazit')
	  }
    }
}
function expand(objekt)
{
//if (objekt.nextSibling)
  //{
    bratr = objekt.nextSibling;
   // if (eval(bratr).style.visibility != 'visible' && eval(bratr).style.visibility != 'hidden') eval(bratr).style.visibility = 'hidden';
  if (bratr.style.visibility == 'visible')
    {
      bratr.style.visibility = 'hidden';
      bratr.style.position = 'absolute';
   	  objekt.style.backgroundImage = 'url(/pages/img/plus.gif)';
    }
  else
    {
      bratr.style.visibility = 'visible';
      bratr.style.position = 'static';
	  objekt.style.backgroundImage = 'url(/pages/img/minus.gif)';
    }
 //}
}
function init()
{
  //window.alert('Spuštěno');
   pole = document.getElementById('content').getElementsByTagName('ul');
   for (i=0;i<pole.length;i++) {
   		eval(pole[i]).style.visibility='hidden';
   	}
}
function getElementsByClassName(class_name)
{
  var all_obj,ret_obj=new Array(),j=0;
  if(document.all)all_obj=document.all;
  else if(document.getElementsByTagName && !document.all)all_obj=document.getElementsByTagName("*");
  for(i=0;i<all_obj.length;i++)
  {
    if(all_obj[i].className==class_name)
    {
      ret_obj[j]=all_obj[i];
      j++;
    }
  }
  return ret_obj;
}