CommunityID/modules/users/views/scripts/register/eula.phtml

<h2><?php echo $this->translate('Please read the following EULA in order to continue') ?></h2>
<form name="eulaForm" action="accepteula" method="post">
    <input type="hidden" name="token" value="<?php echo $this->token ?>" />
    <div>
        <textarea rows="30" style="width:700px"><?php echo $this->eula ?></textarea>
    </div>
    <div style="margin-top:20px">
        <input type="submit" id="agree" value="<?php echo $this->translate('I AGREE') ?>" />&nbsp;&nbsp;&nbsp;&nbsp;
        <input type="submit" id="disagree" value="<?php echo $this->translate('I DISAGREE') ?>" onclick="this.form.action='declineeula'; return true" />
        <script>
            YAHOO.util.Event.onDOMReady(function () {
                COMMID.loader.insert(
                    ["button"],
                    function() {
                        new YAHOO.widget.Button("disagree", {
                            type: "push",
                            label: "I DISAGREE",
                            onclick : {fn: function(){
                                document.eulaForm.action = 'declineeula';
                                document.eulaForm.submit();
                            }}
                        });
                        new YAHOO.widget.Button("disagree");
                        new YAHOO.widget.Button("agree");
                    }
                );
            });
        </script>
    </div>
</form>