if (isset($_GET['usernamecheck'])) {
$usernamecheck =
trim(htmlspecialchars($_GET['usernamecheck'],
ENT_QUOTES, "UTF-8"));

$abfrage = "SELECT nameb FROM log WHERE
nameb ='$usernamecheck'";
$ergebnis = mysql_query($abfrage);
while($row = mysql_fetch_object($ergebnis))
$nameb=$row->nameb;

$count = mysql_num_rows($ergebnis);



if($count == 1)
{

echo "<script
type="text/javascript">logpop.style.visibility='hidd
en';</script>";

echo "Existiert
<a onClick='logpop.style.visibility='hidden';
logpop1.style.visibility='hidden''>X</a> ";
}
else
{
echo "Existiert nicht";
}

}