user = "ned";
site = "autogielda.kom.pl";
wyswietl = "<FONT FACE=\"Verdana, Sans-serif, Arial\" SIZE=5 COLOR=\"#000000\">" + user + "&#64;" + site + "</FONT>";

document.write('<a onFocus=\"blur()\" href=\"&#109;&#97;&#105;&#108;&#116;&#111;&#58;' + user + '&#64;' + site + '\">' + wyswietl + '</a>');