function pagInicio(){
var title = '::Fantalizador';
var url = location.href;
   if (document.all)
     window.external.AddFavorite(url, title);
   else if (window.sidebar)
     window.sidebar.addPanel(title, url, "")
   else if (window.sidebar&&window.sidebar.addPanel)
     window.sidebar.addPanel(title,url,"");
}

function isUrl(url){
var regex_url = new RegExp("((https?|ftp|gopher|telnet|file|notes|ms-help):((\/\/)|(\\\\\\\\))[\w\d:#%/;$()~_?\\-=\\\.&]*)");
return regex_url.test(url);
}

function getDomain(s){
var regexp = new RegExp("^(https?://)?(www.)?([^.]+).*$");
var result = s.replace(regexp, "$3");
return result;
}