Add refesh button on captcha

Hi all i have the following code that shows a captcha image. The problem is it does not show a refresh button it only refreshes when the image is clicked. How do I add a button that will refresh the image.

[code=html]<img id=”{if $captcha_id}{$captcha_id}_{/if}security_img” class=”{if $captcha_id}{$captcha_id}_{/if}security_img” alt=”{$lang.click_refresh}” title=”{$lang.click_refresh}” src=”{$smarty.const.RL_LIBS_URL}kcaptcha/getImage.php?{$smarty.server.REQUEST_TIME}{if $captcha_id}&amp;id={$captcha_id}{/if}” style=”cursor: pointer;” onclick=”$(this).attr(‘src’,'{$smarty.const.RL_LIBS_URL}kcaptcha/getImage.php?’+Math.random(){if $captcha_id}+’&amp;id={$captcha_id}'{/if});” />[/code]

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