How can I disable a submit button in an HTML form?

Question

I have a form where users can contact me but it is currently broken. I was wondering if there is a way to temporarily disable the submit button, but still show it on the screen. How do I achieve this?

<form method="post" action="#">
    <div class="row 50%">
        <div class="6u"><input type="text" name="name" placeholder="Name" /></div>
        <div class="6u"><input type="email" name="email" placeholder="Email" /></div>
    </div>
    <div class="row 50%">
        <div class="12u"><textarea name="message" placeholder="Message" rows="6"></textarea></div>
    </div>
    <div class="row">
        <div class="12u">
            <ul class="actions">
                <li><input type="submit" value="Send Message" /></li>
                    <li><input type="Reset" value="Clear" /></li>
            </ul>
        </div>
    </div>
</form>

Answer 1

<input type="submit" value="Send Message" disabled>

Thanks APAD1