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<           '#value' => '<img src="'. $img_src .'" alt="'. t('Image CAPTCHA') .'" title="'. t('Image CAPTCHA') .'" />',
---
>           '#value' => '<img id="image-captcha" src="'. $img_src .'" alt="'. t('Image CAPTCHA') .'" title="'. t('Image CAPTCHA') .'" />',
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>         if(variable_get('image_captcha_image_reload_button', FALSE)) {
>           drupal_add_js('misc/jquery.js');
>           $result['form']['captcha_image_reload'] = array(
>             '#type' => 'markup',
>             '#value' => '<div class="description">Can\'t see text on image? You can <a id="image-captcha-reload" onclick="" href="#">reload it</a></div><script>
> $(function() {
>   $("#image-captcha-reload").click(function() {
>     var src = $("#image-captcha").attr("src"); 
>     var fragments = src.split("/");
>     fragments[fragments.length - 1] = (new Date).getTime();
>     $("#image-captcha").attr("src", fragments.join("/") + "&r=1");
>     return false;
>   });
> });
> </script>',
>             '#weight' => -1,
>           );
>         }