public function addContentElementsCSS ($strBuffer='', $objTemplate=null)
	{
		foreach (array('CSS', 'SCSS' , 'LESS') as $strType)
		{
			if ($GLOBALS['TL_CTB_' . $strType] == '')
			{
				continue;
			}

			$strKey = substr(md5($strType . $GLOBALS['TL_CTB_CSS'] . $GLOBALS['TL_CTB_SCSS'] . $GLOBALS['TL_CTB_LESS']), 0, 12);
			$strPath = 'assets/css/' . $strKey . '.' . strtolower($strType);
			
			// Write to a temporary file in the assets folder
			if (!file_exists($strPath))
			{
				$objFile = new File($strPath, true);
				$objFile->write($GLOBALS['TL_CTB_' . $strType]);
				$objFile->close();
			}
				
			$strPath .= '|static';
			
			// add file path to TL_USER_CSS
			$GLOBALS['TL_USER_CSS'][] = $strPath;
		}

		return $strBuffer;
	}