var contentElement = document.createElement('span'); contentElement.id = 'mostpopularkeywords'; contentElement.innerHTML = '
PLA, Transgenic Plants, Biofuel, Biodegradable, Cellulose, Cancer, Biodiesel, Ethanol, Polylactic Acid, Biomass
'; var scriptElement = document.getElementById('scriptmostpopularkeywords'); scriptElement.parentNode.insertBefore(contentElement, scriptElement);