//intro
function ukaz(text,el)
{
  var old=el.firstChild.getAttribute("src");
  var novy=old.slice(0,old.length-4)+"_2.gif";
  el.firstChild.src=novy;  
  getElement("odkaz").innerHTML=text;
  el.onmouseout=function(){vratSrc(el.id,old);}
  el.onclick=function()
  {
    vratSrc(el.id,old);
    if(el.rel=="jinam"){window.open(el.href);return false;}
  }
}
function vratSrc(id,old)
{
  getElement(id).firstChild.src=old;
  getElement("odkaz").innerHTML="";
}
function getElement(id)
{
  return document.getElementById(id);
}
function zmenJazyk(lang)
{
  var href=location.href;
  href=href.split(".");
  var newHref="";
  for(i=0;i<(href.length-1);i++)
  {
    if(i==(href.length-2))
    {
      casti=href[i].split("_");
      href[i]="";
      for(j=0;j<casti.length;j++)
      {
        if(casti[j]=="en" || casti[j]=="de"){break;}
        href[i]+=casti[j]+"_";
      }
      href[i]=href[i].slice(0,href[i].length-1);
    }
    newHref+=href[i]+".";
  }
  if(lang=="cz"){lang="";}
  else{lang="_"+lang;}
  newHref=newHref.slice(0,newHref.length-1)+lang+"."+href[href.length-1];
  location.href=newHref;
  return false;
}
function odkaz(href)
{
  window.open(href);
  return false;
}