return (data && data instanceof Array); 
return (data && data.join); 
dwr.util._isArray = function(data) {  return (data && data instanceof Array);};
266	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/266/40e0ddf3c94f151b1d5b2364a9a5d9ca65a69c45/util.js/buggy/java/org/directwebremoting/util.js