function img_open(url,w, h) {
  var opt,ret;
  opt = "toolbar=0,width=" + (w+10) + "px,height=" + (h+30) + "px";
  ret = window.open(url, "", opt);
  ret.focus();
}

function local_page() {
  var loc = location.pathname;
  loc = loc.slice(loc.lastIndexOf('/')+1);
  if (loc == '')
    loc = 'index';
  else
    loc = loc.slice(0,loc.lastIndexOf('.'));
  if (loc=='index' || loc=='kdojsme' || loc=='sluzby' || loc=='reference' || loc=='kontakt' || loc=='napistenam')
    {document.getElementById(loc).style.color = '#06A';
    document.getElementById(loc).style.textDecoration = 'underline';}
  else
    document.getElementById(loc).style.backgroundImage = 'url(img/metal2.jpg)';
}