rem: set id(val) { return this.setAttribute("id",val); }, 
add: set opacity(val){ this._opacity = val + ""; } 
context: 		set id(val) { return this.setAttribute("id",val); },
meta: 1471	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1471/b147039acc32884b50b955ebd94eeaa430713786/env.js/buggy/build/runtest/env.js