function AddFavorite(linkObj,addUrl,addTitle)
{
  if (document.all && !window.opera)
  {
    window.external.AddFavorite(addUrl,addTitle);
    return false;
  }
  else if (window.opera && window.print)
  {
    linkObj.title = addTitle;
    return true;
  }
  else if ((typeof window.sidebar == 'object') && (typeof window.sidebar.addPanel == 'function'))
  {
    if (window.confirm('Přidat oblíbenou stránku jako nový panel?'))
    {
      window.sidebar.addPanel(addTitle,addUrl,'');
      return false;
    }
  }
  window.alert('Po potvrzení­ stiskňete CTRL-D,\nsstránka bude přidána k Vašim oblíbeným odkazům.');
  return false;
}

function AddEngFavorite(linkObj,addUrl,addTitle)
{
  if (document.all && !window.opera)
  {
    window.external.AddFavorite(addUrl,addTitle);
    return false;
  }
  else if (window.opera && window.print)
  {
    linkObj.title = addTitle;
    return true;
  }
  else if ((typeof window.sidebar == 'object') && (typeof window.sidebar.addPanel == 'function'))
  {
    if (window.confirm('Add this page to the sidebar?'))
    {
      window.sidebar.addPanel(addTitle,addUrl,'');
      return false;
    }
  }
  window.alert('For confirmation press CTRL-D,\npage will be added to the sidebar.');
  return false;
}

function adv(uri)
{
	window.open(uri, "page", "menubar=yes, location=yes, status=no, toolbar=no, scrollbars=yes, resizable=yes");
	return false; 
}

function w(uri)
{
	var result = adv(uri);
	return result;
}

function wi(url, width, height)
{
	width += 50; height += 70;
	window.open(url, 'foto', 'width='+width+', height='+height+', toolbar=no, location=no, resizable=yes, scrollbars=yes, top=100, left=100');
	return false; 
}

// ankety
function set_poll(html_id, poll_id)
{
    var el = document.getElementById('POLLS_answer_' + html_id);
    el.value = poll_id;
}

function send_poll(html_id)
{
    var el = document.getElementById('POLLS_form_' + html_id);
    el.submit();

    return true;
}

function setActiveStyleSheet(title) {
   var i, a, main;
   for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
     if(a.getAttribute("rel").indexOf("style") != -1
        && a.getAttribute("title")) {
       a.disabled = true;
       if(a.getAttribute("title") == title) a.disabled = false;
     }
   }
}

// form submit check
function change_js_input()
{
	var items = '';
	var i = 0;
	var error = false;
	var a;
	var report = '';
	var var_name = '';

	if (document.getElementById('required_items')) {
		items = document.getElementById('required_items');
		items = items.value.split(';');
	}

	for (i = 0; i < items.length; i ++) {
		var_name = items[i];
		if (document.getElementById(var_name))
		{
			a = document.getElementById(var_name).value;
		}

		if (!a || a == '+420' || a == '@')
		{
			error = true;

			if (var_name == 'jmeno') report += 'Není zadáno jméno!\n';
			if (var_name == 'e-mail' || a == '@') report += 'Není zadán e-mail!\n';
			if (var_name == 'zprava') report += 'Není zadán obsah zprávy!\n';
		}
	}

	if (error) {
		alert(report);
		return false;
	}

	var el = document.getElementById('webx_1_js_value');
	if (el) el.value = 1;
	// pro případ dalších výskytů dalších formulářů
	var el2 = document.getElementById('webx_2_js_value');
	if (el2) el2.value = 1;
	var el3 = document.getElementById('webx_3_js_value');
	if (el3) el3.value = 1;
	var el4 = document.getElementById('webx_4_js_value');
	if (el4) el4.value = 1;


	return true;
}