work was only after I changed the lines 27 and 29
I do not understand PHP :-)
http://www.chaga-mushroom.com/
I do not understand PHP :-)
Code:
$html .= '\'http://www.chaga-mushroom.com/plugins/FormSimple/fields/securimage/securimage_show.php?\'+ Math.random(); return false">';
$html .= '<img id="captchaimg' . $this->html_id() . '" style="display:block;" ';
$html .= 'src="http://www.chaga-mushroom.com/plugins/FormSimple/fields/securimage/securimage_show.php?' . mt_rand() . '" ';