I think I have been starring at this for too long, and I can't figure why the following is not working even though I had it working from another page.

The form will not submit in IE and flags a js error, FF javascript console says "document.imageManager.submit is not a function"

?? Any ideas - I know its something so simple I'll just kick myself...

  <fieldset>
    <legend>Image Manager</legend>
    <form name="imageManager" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" />
      <p class="button">
      <input type="hidden" name="sid" value="<?php echo $_GET['sid']; ?>" />
      <input type="hidden" name="ws" value="<?php echo $imanagerWSFile; ?>" />
      <input type="hidden" name="fs" value="<?php echo $imanagerFSFile; ?>" />
      <input type="checkbox" id="overwrite" name="overwrite"<?php echo ($_GET['ox'] == 1) ? ' checked' : ''; ?> />
      <label for="overwrite">
        Overwrite exisiting images if already exists
      </label>
      &nbsp;&nbsp;&nbsp;
      <input type="submit" name="submit" value="Process Image" onClick="this.value='One Moment Please...';this.disabled=true;imageManager.cancel.disabled=true;document.imageManager.submit();" />
      <input type="button" name="cancel" value="Cancel" onClick="window.close()" />
      </p>
    </form>
    <div align="center">
      <?php echo '<strong>' . $imanagerWSFile . '</strong><br /><br />' . force_max_preview($imanagerFSFile, $imanagerWSFile); ?>
    </div>
  </fieldset>

Change the name of your submit button from "submit" to something else like "formsubmit". It's confusing the button named "submit" and the built-in function named "submit"