function rozsirene () {
    document.getElementById('rozsirene').style.display = 'block';
    document.getElementById('zakladni').style.display = 'none';
    document.getElementById('firmy').style.display = 'none';
    
    return false;
}
function zakladni () {
    document.getElementById('rozsirene').style.display = 'none';
    document.getElementById('zakladni').style.display = 'block';
    document.getElementById('firmy').style.display = 'none';

    return false;
}
function firmy () {
    document.getElementById('rozsirene').style.display = 'none';
    document.getElementById('zakladni').style.display = 'none';
    document.getElementById('firmy').style.display = 'block';

    return false;
}

function hideObject(id)
{
	var eHide = document.getElementById(id);
	if (eHide == null) return false;

	eHide.style.visibility='hidden';
	eHide.style.display='none';
}

function showObject(id)
{
	var eShow = document.getElementById(id);
	if (eShow == null) return false;

	eShow.style.visibility='visible';
	eShow.style.display='';
}

function checkFirmy () {

	var ic = document.getElementById('ic');
	var nazev = document.getElementById('nazev');

	var nazevVal = nazev.value;
	var icVal = ic.value;
	
	if (nazevVal.length > 0) { 
		ic.disabled='disabled';
		ic.style.backgroundImage='none';
		ic.style.backgroundColor='#bbb';
	}
	if (nazevVal.length == 0) { 
		ic.disabled='';
		ic.style.backgroundImage='url(/images/inputBg.gif)';
		ic.style.backgroundColor='#eee';
	}

	if (icVal.length > 0) { 
		nazev.disabled='disabled';
		nazev.style.backgroundImage='none';
		nazev.style.backgroundColor='#bbb';
	}
	if (icVal.length == 0) { 
		nazev.disabled='';
		nazev.style.backgroundImage='url(/images/inputBg.gif)';
		nazev.style.backgroundColor='#eee';
	}
}

function zalozka(title,url)
{
  if(window.sidebar){ window.sidebar.addPanel(title,url,"");}
  else if(document.all){ window.external.AddFavorite(url,title);}
  else if(window.opera&&window.print){return true;}
}