function Ukaz(obj)
{
	// Pro NN 4+
	if (document.layers)
	{ 
		document.layers[obj].visibility = "show";
	}	
	
	// Pro IE 4
	if (document.all && !document.getElementById) document.all[obj].style.display = "block";

	// Pro NN 6+, IE 5+, Mozillu 1.2+, Operu 7+
	if (document.getElementById) document.getElementById(obj).style.display = "block";
}
function Schovej(obj)
{
	if (document.layers)
	{
		document.layers[obj].visibility = "hide";
	}	
	if (document.all && !document.getElementById) document.all[obj].style.display = "none";

	if (document.getElementById) document.getElementById(obj).style.display = "none";
}