var suppbyid = (document.getElementById) ? 1 : 0
var suppall = (document.all) ? 1 : 0;
var supp = suppbyid + suppall;

function GetElement(obj_name) {
  if (suppbyid) return document.getElementById(obj_name);
  if (suppall) return document.all(obj_name);
  return NULL;
}

var topmenu1_over = new Image();
topmenu1_over.src = "img/varosiportal_hover.gif";
var topmenu1_out = new Image();
topmenu1_out.src = "img/varosiportal.gif";

var topmenu2_over = new Image();
topmenu2_over.src = "img/hagyomany_hover.gif";
var topmenu2_out = new Image();
topmenu2_out.src = "img/hagyomany.gif";

var topmenu3_over = new Image();
topmenu3_over.src = "img/termeszet_hover.gif";
var topmenu3_out = new Image();
topmenu3_out.src = "img/termeszet.gif";

var topmenu4_over = new Image();
topmenu4_over.src = "img/kozerdeku_hover.gif";
var topmenu4_out = new Image();
topmenu4_out.src = "img/kozerdeku.gif";

function SetImage(image_doc, image_mem) {
  var obj = document.getElementById(image_doc);

  if (obj) {
    obj.src = eval(image_mem + ".src");
  }
}

function TooglePanel(element_id, header_id) {
  var element = GetElement(element_id);
  var header_el = GetElement(header_id);
  var show = ( (element.style.display=="none" || element.style.display=="") ? 1 : 0 );

  if (show) {
    element.style.display = "block"; header_el.className = "PanelHeaderOpen";
  } else {
    element.style.display = "none"; header_el.className = "PanelHeader";
  }
}