var highlightbehavior="TD";

var ns6=document.getElementById&&!document.all;
var ie=document.all;

if (document.images) {
  iy1 = new Image();
  iy2 = new Image();
  ig1 = new Image();
  ig2 = new Image();
  iy1.src = "http://ontour.hyperboy.de/images/buttono1.gif";
  iy2.src = "http://ontour.hyperboy.de/images/buttono2.gif";
  ig1.src = "http://ontour.hyperboy.de/images/buttong1.gif";
  ig2.src = "http://ontour.hyperboy.de/images/buttong2.gif";
};

function mmover(e,hi) {
  source=ie ? event.srcElement : e.target
  if (source.tagName=="TABLE") return;
  while (source.tagName != highlightbehavior && source.tagName != "HTML")
    source = ns6 ? source.parentNode : source.parentElement;
    if (source.style.backgroundImage != hi && source.id != "ignore")
      source.style.backgroundImage=hi;
};

function mmout(e,oi){
  if ( ie && (event.fromElement.contains(event.toElement)|| source.contains(event.toElement) ||source.id=="ignore") || source.tagName=="TABLE")
    return;
  else
    if (ns6 && (contains_ns6(source, e.relatedTarget) || source.id=="ignore")) return;
    if (ie && event.toElement != source || ns6 && e.relatedTarget != source)
      source.style.backgroundImage=oi;
};


function mymover(e) {
  mmover(e,'url(http://ontour.hyperboy.de/images/buttono2.gif)');
};

function mymout(e) {
  mmout(e,'url(http://ontour.hyperboy.de/images/buttono1.gif)');
};

function mgmover(e) {
  mmover(e,'url(http://ontour.hyperboy.de/images/buttong2.gif)');
};

function mgmout(e) {
  mmout(e,'url(http://ontour.hyperboy.de/images/buttong1.gif)');
};

function contains_ns6(master, slave) {
  while (slave.parentNode)
    if ((slave = slave.parentNode) == master)
      return true;
  return false;
};