private function fetch()
    {
        $html = &$this->tpl_contents;
        $html = str_replace("<if(", "<?php if(", $html);
        $html = str_replace("<elseif(", "<?php elseif(", $html);
        $html = str_replace("<else>", "<?php else: ?>", $html);
        $html = str_replace(")>", "): ?>", $html);
        $html = str_replace("</if>", "<?php endif; ?>", $html);

        extract($this->variables);

        ob_start();
        eval(" ?>{$html} ");
        $html = ob_get_contents();
        ob_end_clean();

        eval(" \$html = \"".addslashes($html)."\"; ");
    }