使用 css 完全定制,演示
<form method="POST" action="">
<script type="text/javascript">
var RecaptchaOptions = {
tabindex: 1,
theme: 'custom',
custom_theme_widget: 'recaptcha_widget'
};
</script>
<div id="recaptcha_widget" style="display:none"><div id="recaptcha_image"></div>
<div class="recaptcha_only_if_incorrect_sol" style="color:red">Incorrect, please try again</div>
<span class="recaptcha_only_if_image">Enter the words above:</span>
<span class="recaptcha_only_if_audio">Type what you hear:</span>
<input type="text" id="recaptcha_response_field" name="recaptcha_response_field">
<div class="get_another_captcha"><a href="javascript:Recaptcha.reload()">Get another CAPTCHA</a></div>
<div class="recaptcha_only_if_image"><a href="javascript:Recaptcha.switch_type('audio')">Get an audio CAPTCHA</a></div>
<div class="recaptcha_only_if_audio"><a href="javascript:Recaptcha.switch_type('image')">Get an image CAPTCHA</a></div>
<div><a href="javascript:Recaptcha.showhelp()">Help</a></div>
<script type="text/javascript" src="http://www.google.com/recaptcha/api/challenge?k=YourAPI"></script>
<noscript><iframe src="http://www.google.com/recaptcha/api/noscript?k=YourAPI" height="300" width="500" frameborder="0"></iframe><br>
<textarea name="recaptcha_challenge_field" rows="3" cols="40">
</textarea>
<input type="hidden" name="recaptcha_response_field" value="manual_challenge"></noscript></div>
<script type="text/javascript">
window.onload = function() {
Recaptcha.focus_response_field();
}
</script>
<table cellspacing="0" cellpadding="4" border="0" style="font-family: Helvetica, sans-serif; color: #000000; font-size: 12px;"><tr><td><div><input type="submit" name="Button1" value="Submit"></div></td></tr></table></form>