docs: def checkCss(self, value):
  		"""docstring for checkCss"""
  		stripped = self.decodeCharReferences(value)
  
  		stripped = _cssCommentPat.sub(u'', stripped)
  		value = stripped
  
  		stripped = _toUTFPat.sub(self._convertToUtf8, stripped)
  		stripped.replace(u'\\', u'')
  		if _hackPat.search(stripped):
  			# someone is haxx0ring
  			return False
  
  		return value