public function __construct($proposal, $tag = '')
    {
        if ($proposal->rel_id != null && $proposal->rel_type == 'customer') {
            $this->load_language($proposal->rel_id);
        } else if ($proposal->rel_id != null && $proposal->rel_type == 'lead') {
            $CI = &get_instance();

            $this->load_language($proposal->rel_id);
            $CI->db->select('default_language')->where('id', $proposal->rel_id);
            $language = $CI->db->get('leads')->row()->default_language;

            load_pdf_language($language);
        }

        $proposal                = hooks()->apply_filters('proposal_html_pdf_data', $proposal);
        $GLOBALS['proposal_pdf'] = $proposal;

        parent::__construct();

        $this->tag      = $tag;
        $this->proposal = $proposal;

        $this->proposal_number = format_proposal_number($this->proposal->id);

        $this->SetTitle($this->proposal_number);
        $this->SetDisplayMode('default', 'OneColumn');

        // get the current page break margin
        $bMargin = $this->getBreakMargin();
        // get current auto-page-break mode
        $auto_page_break = $this->AutoPageBreak;
        // disable auto-page-break
        $this->SetAutoPageBreak(false, 0);
        // set bacground image
        $img_file = 'https://www.ttscrm.com/CRM/media/teklifzemin.png';
        $this->Image($img_file, 0, 0, 210, 297, '', '', '', false, 300, '', false, false, 0);
        // restore auto-page-break status
        $this->SetAutoPageBreak($auto_page_break, $bMargin);
        // set the starting point for the page content
        $this->setPageMark();

        # Don't remove these lines - important for the PDF layout
        $this->proposal->content = $this->fix_editor_html($this->proposal->content);
    }