htmlBox inserting
<p>I am trying to add custom buttons in htmlBox ver 4</p>

<p>Their example produces and <code>alert()</code> and this is working.</p>

<p>Here is my start on an email link insertion:</p>

<pre><code>var email = { 
    icon:"email.png",
    tooltip:"Email",
    command:function(){ 
        var emailTX = prompt('Enter the email address','');
        if (emailTX!='') { 
            insert_text(emailTX); 
        }
    }
}
</code></pre>

<p>I realise that 'insert_text' is not enough.
How to insert into the textarea?</p>
