rawurlencode alle emails

Ikke gennemtestet, men hvad med bare:

    $script = '<script type="text/javascript">var a = '<a href="mailto:';var ea = '">';var s = ''; var p = '.'; function wm(t,d,u) { document.write(s+u+'@'+s+d+s+p+s+t); }</script>';
    $reps = array(
            "/(<a href=[\"']mailto:)([a-z0-9+_-]+)@([a-z0-9+_-]+)\.([^\"']+)[^>]+>(.*?)/is"
                => '<script type="text/javascript">wm("\\4"+ea,"\\3",a+"\\2");</script>\\5',
            "/(^| |>)([a-z0-9+_-]+)@([a-z0-9+_-]+)\.(.*?)( |<|$)/is"
                => '\\1<script type="text/javascript">wm("\\4","\\3","\\2");</script>\\5'
        );
    echo $script . preg_replace(array_keys($reps),array_values($reps),$htmldoc);

(hvor $htmldoc så er dit html dokument)