if (top.location != location) {
  top.location.href = location.href;
}

if(location.href.indexOf(".bokis", 0) != -1) {
  location.href = location.href.replace(".bokis","");
}

if(location.href.indexOf("http://chem4free", 0) != -1) {
  location.href = location.href.replace("http://chem4free","http://www.chem4free");
}