[SOLVED] image only works after right click show picture in ie6

[r-it]

i am baffled with this problem and i don't know what i can do anymore for my captcha script. I have this class to create my captcha:

<?php

  class captcha
  {

    var $Length;
    var $CaptchaString;
    var $ImageType;
    var $Font;
    var $CharWidth;

    function captcha ($length = 6, $type = 'jpeg', $letter = '')
    {

      $this->Length    = $length;
      $this->ImageType = $type;
      $this->Font      = './hurryup.ttf';
      $this->CharWidth = 19;

      if ($letter == '')
      {

        $this->StringGen();

      }
      else
      {

        $this->Length        = strlen($letter);
        $this->CaptchaString = $letter;

      }

      $this->SendHeader();

      $this->MakeCaptcha();

    }

    function StringGen ()
    {

      $uppercase  = range('A', 'Z');
      $numeric    = range(0, 9);

      $CharPool   = array_merge($uppercase, $numeric);
      $PoolLength = count($CharPool) - 1;

      for ($i = 0; $i < $this->Length; $i++)
      {

        $this->CaptchaString .= $CharPool[mt_rand(0, $PoolLength)];

      }

    }

    function SendHeader ()
    {

      switch ($this->ImageType)
      {

        case 'jpeg': header('Content-type: image/jpeg'); break;
        case 'png':  header('Content-type: image/png');  break;
        default:     header('Content-type: image/png');  break;

      }

    }

    function MakeCaptcha ()
    {

      $imagelength = $this->Length * $this->CharWidth + 16;
      $imageheight = 35;

      $image       = imagecreate($imagelength, $imageheight);

      $bgcolor     = imagecolorallocate($image, 222, 222, 222);

      $stringcolor = imagecolorallocate($image, 0, 0, 0);
      $linecolor   = imagecolorallocate($image, 0, 0, 0);

      imagettftext($image, 25, 0, 8, 22,
                   $stringcolor,
                   $this->Font,
                   $this->CaptchaString);

      switch ($this->ImageType)
      {

        case 'jpeg': imagejpeg($image); break;
        case 'png':  imagepng($image);  break;
        default:     imagepng($image);  break;

      }

    }

    function GetCaptchaString ()
    {

      return $this->CaptchaString;

    }

  }

?>

and this is to store the string in a session

<?php

  ob_start();

  //Start the session
  session_start();

  //Load the Class
  require('./captcha.class.php');

  //Create a CAPTCHA
  $captcha = new captcha();

  //Store the String in a session
  $_SESSION['CAPTCHAString'] = $captcha->GetCaptchaString();

?>

and this is wt i use to get the show the image

$img = "<img src=\"./captcha.php\" alt=\"Security code\" width=\"130\" height=\"35\" id=\"captcha\" />";

and its shoeing this image only after i right click and say show picture. I am using innerhtml to get this and its not showing any image in fact, i really do not know why, has anyone experienced a similar problem in ie?

 

[r-it]

after 2 sleepless nights, all i had to do was to put a # in my href, like this <a href="#" onclick="..."> because explorer is stupid, this is now solved

[Yesideez]

One problem I found when using PHP to make images was that sometimes IE would show the cached image instead of showing a new one. To get around this problem I'd fool the browser into thinking the image was a different link by appending a random number on the end, something like this:

 

$img = '<img src="./captcha.php?'.mt_rand(1,10000).'" alt="Security code" width="130" height="35" id="captcha" />';