for(var i=0; i<document.links.length; i++) {
  if((document.links[i].hostname != "localhost" && document.links[i].hostname != "www.webbiriihi.fi" && document.links[i].hostname != "webbiriihi.fi" && document.links[i].hostname != "www.webbiriihi.com" && document.links[i].hostname != "webbiriihi.com" && document.links[i].hostname != "www.webbiriihi.net" && document.links[i].hostname != "webbiriihi.net") && (document.links[i].protocol != "mailto:")) {
    document.links[i].target = "_blank";
  }
}