rem: return this; 
add: return parseFloat(this); 
context: 	toFloat: function(){		return this;	}
meta: 7052	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7052/c867c04a2c14582c6eb4c48fcdb1cb01facbbd51/String.js/buggy/Native/String.js