rem: return this[$random(0, this.length - 1)] || null; 
add: return (this.length) ? this[$random(0, this.length - 1)] : null; 
context: 	getRandom: function(){		return this[$random(0, this.length - 1)] || null;	},
meta: 5237	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5237/c27654d357a2e4e99d83f1bddd296112f26aff73/Array.js/buggy/Native/Array.js