par chyb v ankete

<?
$filename="anketa.dat";
$pruh=50;
if ($hlasuj<>'')  {
  $hlasoval++;
  SetCookie("hlasoval", $hlasoval, Time()+1);
  if ($hlasoval==1) {
    $file=FOpen($filename, "r+");
    $data=Explode("#",FRead($file,999));
    $data[$hlasuj]=$data[$hlasuj]+1;
    Rewind($file);
    FWrite($file, Implode($data,"#"));
    FClose($file);
}else{$alert="Už jste hlasoval(a)!";}}
if (File_Exists($filename)):
  $file = FOpen($filename, "r+");
  $data=Explode("#",FRead($file,999));
  Rewind($file);
else:
  $file = FOpen($filename, "w");
  $data[0]=0;
  $data[1]=0;
endif;
FClose($file);
?>

<div align="center">
  <center>
  <table>
    <tr>
      <td COLSPAN="2"><b><font face="Verdana" size="2">Líbí se vám tato anketa?</font></b></td>
    </tr>
    <tr>
      <td valign="top"><ul><li><font face="Verdana" size="2"><a HREF="ucp.php?hlasuj=0">Ano</a></font></li></ul></td>
      <td valign="top"><font face="Verdana" size="2"><?if (($data[0]==0)and($data[1]==0)) {echo "0(0%)";}else{?><img src="sloupec.bmp" align="middle" height="8" width="<?echo round($data[0]/($data[0]+$data[1])*$pruh);?>"> <?echo $data[0],"(",round($data[0]/($data[0]+$data[1])*100),"%)";}?></font></td>
    </tr>
    <tr>
      <td valign="top"><ul><li><font face="Verdana" size="2"><a HREF="ucp.php?hlasuj=1">Ne</a></font></li></ul></td>
      <td valign="top"><font face="Verdana" size="2"><?if (($data[0]==0)and($data[1]==0)) {echo "0(0%)";}else{?><img src="sloupec.gif" align="middle" height="8" width="<?echo round($data[1]/($data[0]+$data[1])*$pruh);?>"> <?echo $data[1],"(",round($data[1]/($data[0]+$data[1])*100),"%)";}?></font></td>
    </tr>
    <tr>
      <td COLSPAN="2"><font SIZE="1" face="Verdana" color="#808080">Hlasujte kliknutím na odpověď.</font></td>
    </tr>
  </table>
  </center>
</div>

<?if ($alert<>'') {?>
<SCRIPT LANGUAGE=JAVASCRIPT>
alert('<?echo $alert?>');
</SCRIPT>
<?}?>