Код:
<script type="text/javascript"> PiarNik="ник"; PiarPas="пароль"; var L="<div id=\"PR_loginDiv\" style=\"display:none;\">\ <form id=\"form_login\" name=\"login\" method=\"post\" action=\"login.php?action=in\" onsubmit=\"return check_form()\">\ <fieldset>\ <input type=\"hidden\" name=\"form_sent\" value=\"1\"/>\ <input type=\"text\" id=\"fld1\" name=\"req_username\" size=\"21\" maxlength=\"25\"/>\ <input type=\"text\" id=\"fld2\" name=\"req_password\" size=\"7\" maxlength=\"16\"/>\ <input type=\"submit\" class=\"button\" name=\"login\"/>\ </fieldset>\ </form>\ </div>\ <li id=\"navpiar\"><span id=spMyimg><a onclick=\"PiarIn()\">PR-Вход</a></span></li>"; if($("#navlogin").html()!=null){ $("#navlogin").after(L) //navlogin $("#PR_loginDiv #fld1").val(PiarNik) $("#PR_loginDiv #fld2").val(PiarPas) function PiarIn () {$("#PR_loginDiv input[type='submit']").click();} } </script>

Ставим в HTML-низ