$(function() {
    $('#prihlasit').click(loginForm);
});

function loginForm() {
    var link = window.location;
    var form = $('\
<form action="'+link+'" method="post">\
<table>\
  <tr><td><label for="nickname">Uživatelské jméno</label></td><td><input type="text" name="nickname" id="nickname" style="width:150px"/></td></tr>\
  <tr><td><label for="password">Heslo</label></td><td><input type="password" name="password" id="password" style="width:150px" /></td></tr>\
  <tr><td colspan="2" style="text-align:center"><input type="submit" value="Přihlásit" name="OK" id="OK" /></td></tr>\
</table></form>');
    form.modal({'containerCss': {height: 'auto', width: '30em', padding: '1em', 'margin-left': '-15em', top: '20%'}});
    $('#nickname').focus();
    return false;
}