Custom PDF Header

function NewPage() 
    {
        if ($this->pageNumber==0)
        {
            // check if there is pdf header template for this report
            // and set if it is found
            $tmpl_pdf = find_custom_file("/reporting/forms/".$this->headerTmpl.".pdf");
            if ($tmpl_pdf) {
                $this->tmplSize = $this->setSourceFile($tmpl_pdf);
            }
        }

        $this->pageNumber++;
        parent::newPage();

        if ($this->tmplSize) {
            $this->row = $this->pageHeight - $this->topMargin; // reset row
            $id = $this->importPage(min($this->pageNumber, $this->tmplSize));
            $this->useTemplate($id);
        }

        // include related php file if any
        $tmpl_php = find_custom_file("/reporting/forms/".$this->headerTmpl.".php");
        if ($tmpl_php) {
            include($tmpl_php);
        }

        if (method_exists($this, $this->headerTmpl))    // draw predefined page layout if any
            $this->{$this->headerTmpl}();
    }