public function generateAttributes($assoc_array_of_attributes, $element = '')
    {
        $html = '';
        if ($this->_sortAttr) {
            ksort($assoc_array_of_attributes);
        }
        foreach ($assoc_array_of_attributes as $key => $value) {
            if (!$this->_xhtml) {
                // Remove namespaced attributes
                if (strpos($key, ':') !== false) {
                    continue;
                }
                // Check if we should minimize the attribute: val="val" -> val
                if ($element && !empty($this->_def->info[$element]->attr[$key]->minimized)) {
                    $html .= $key . ' ';
                    continue;
                }
            }
            // Workaround for Internet Explorer innerHTML bug.
            // Essentially, Internet Explorer, when calculating
            // innerHTML, omits quotes if there are no instances of
            // angled brackets, quotes or spaces.  However, when parsing
            // HTML (for example, when you assign to innerHTML), it
            // treats backticks as quotes.  Thus,
            //      <img alt="``" />
            // becomes
            //      <img alt=`` />
            // becomes
            //      <img alt='' />
            // Fortunately, all we need to do is trigger an appropriate
            // quoting style, which we do by adding an extra space.
            // This also is consistent with the W3C spec, which states
            // that user agents may ignore leading or trailing
            // whitespace (in fact, most don't, at least for attributes
            // like alt, but an extra space at the end is barely
            // noticeable).  Still, we have a configuration knob for
            // this, since this transformation is not necesary if you
            // don't process user input with innerHTML or you don't plan
            // on supporting Internet Explorer.
            if ($this->_innerHTMLFix) {
                if (strpos($value, '`') !== false) {
                    // check if correct quoting style would not already be
                    // triggered
                    if (strcspn($value, '"\' <>') === strlen($value)) {
                        // protect!
                        $value .= ' ';
                    }
                }
            }
            $html .= $key.'="'.$this->escape($value).'" ';
        }
        return rtrim($html);
    }