protected function getInputTag()
    {
        // We do not use a 'button' element because it is broken differently in
        // different versions of Internet Explorer

        $tag = new SwatHtmlTag('input');

        $tag->type = 'submit';
        $tag->name = $this->id;
        $tag->id = $this->id;
        $tag->value = $this->title;
        $tag->class = $this->getCSSClassString();
        $tag->tabindex = $this->tab_index;
        $tag->accesskey = $this->access_key;

        if (!$this->isSensitive()) {
            $tag->disabled = 'disabled';
        }

        return $tag;
    }