function showhide(element) {
	var i=0;
	while (element.charAt(i) != ';') {i++;}
	switch (element.substring(0,i)) {
		case "drevina":
			var srcElement = document.getElementById('nova_drevina');
			if (element.substring(i+1,element.length)=="new") {srcElement.style.visibility='visible';
			} else {srcElement.style.visibility='hidden';}
			break;
		case "typ":
			var srcElement = document.getElementById('novy_typ');
			if (element.substring(i+1,element.length)=="new") {srcElement.style.visibility='visible';
			} else {srcElement.style.visibility='hidden';}
			var srcElement = document.getElementById('nova_jednotka');
			if (element.substring(i+1,element.length)=="new") {srcElement.style.visibility='visible';
			} else {srcElement.style.visibility='hidden';}
			break;
		}
	return false;
}

function smaz(radek,data,polozka) {
	if (window.confirm("Opravdu smazat polozku "+polozka+" ?")) {
		var loc="cenik_edit.php?akce=smaz_potvrz&radek="+radek+"&data="+data;
		location.href=loc;
	}
}

function smaz_novinku(novinka,titulekdatum) {
	if (window.confirm("Opravdu smazat novinku "+titulekdatum+" ?")) {
		var loc="novinky_edit.php?akce=smaz_potvrz&novinka="+novinka;
		location.href=loc;
	}
}

// --- zobrazi pop up okno ----------------------------------------------------
function nwindow(cURL, x, y)
{
  left = screen.width - 15 - x;
  show_window(cURL, "lisimg",
              "height="+y+",scrollbars, resizable, " +
              "width="+x+", left="+left+", "+
              "screenX="+left+", top=10");
}
// ----------------------------------------------------------------------------

// --- zobrazi okno ---------------------------------------------------------
function show_window(cURL,cName,cParam)
{
  var new_window = window.open(cURL,cName,cParam);

  new_window.focus();

  return false;
}
// --------------------------------------------------------------------------