function zmien(refer) {
   var ul = "ul-" + refer.id;
   
   //ukryj
   navRoot = document.getElementById(refer.parentNode.parentNode.id);
   for (i=0; i<navRoot.childNodes.length; i++) {
      node = navRoot.childNodes[i];
      //alert(node.id);
      if (node.nodeName=='LI') {
         for (ii=0; ii<node.childNodes.length; ii++) {
            childNode = node.childNodes[ii];
            //alert(childNode.nodeName);
            if (childNode.nodeName == 'A'){
               childNode.className ="";
            }
            else if (childNode.nodeName == 'UL'){
               childNode.style.display = "none";
            }
         }
      }
   }
        
   //alert(refer.parentNode.parentNode.id);
   
   if(refer.className == "over"){
      refer.className=refer.className.replace("over", "");
      document.getElementById(ul).style.display = "none";
   }
   else{
      refer.className+="over";
      document.getElementById(ul).style.display = "block";
   }
}

nn4=(document.layers)?true:false;
ie4=(document.all)?true:false;
niemac=(navigator.appVersion.indexOf("Macintosh")==-1);
ie4=ie4 && niemac;

function resizeIE() {
  window.location.reload();
}
if(ie4){window.onresize = resizeIE;}

if(nn4) {
  _oknoW = window.innerWidth;
  _oknoH = window.innerHeight;
}
function resizeNN() {
  if(window.innerWidth != _oknoW || window.innerHeight != _oknoH) {
    window.location.reload();
  }
}
if(nn4){window.onresize = resizeNN;}


function rozmiaryOkna() {
   var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }

   oknoW=myWidth;
   oknoH=myHeight;

}

function stylDiva() {
  rozmiaryOkna();

  //alert( oknoH + "a");
  // dynamicznie generujemy regułę
  // dla bloku DIV, wyznaczaj±c
  // wielko¶ć i położenie zależnie od
  // rozmiarów okna:

  divStr  = "<STYLE type='text/css'>\n";
  divStr += "#menu {";
  oknoHa = oknoH - 140;
  divStr += "height:" + oknoHa + "px;";
  divStr += "}";
  divStr += "#kontent{";
  oknoHb = oknoH - 47;
  divStr += "height:" + oknoHb + "px !important;";
  divStr += "}";
  divStr += "\n</STYLE>";

  document.write(divStr);
}

function ukryj_oferta(){

}