private function _getStyleTag($oCaller, $sIDPrefix)
{
$_sStyle = $this->addAndApplyFilters($oCaller, array("style_common_admin_page_framework", "style_common_{$this->oProp->sClassName}"), AdminPageFramework_CSS::getDefaultCSS());
$_sStyle = trim($_sStyle);
if ($_sStyle) {
echo "<style type='text/css' id='" . esc_attr($sIDPrefix) . "'>" . $_sStyle . "</style>";
}
}