add: if($element == null) return null; 
context: function find_class($element,$classnames,$result,$first)  {  if(!$first)$first=$element;  if(!$result)$result=new Array();  if ($element.nodeType==1)    {    var $test_exp=new RegExp("(^| )("+$classnames+")( |$)");    if($test_exp.test($element.className)) $result[$result.length]=$element;    }  if ($element.hasChildNodes()) $result=find_class($element.firstChild,$classnames,$result,$first);  if ($element.nextSibling && $element!=$first) $result=find_class($element.nextSibling,$classnames,$result,$first);  return $result;  }
meta: 1857	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1857/516705b8f0b226d950d4b984f1f7bd320363a288/rounded-corners.js/buggy/static/javascripts/rounded-corners.js