rem: eval(this._expr); 
add: eval(this._expr); 
context:   notify: function(timer) {    eval(this._expr);    }
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/c16218a0290cb12af3e2319708096e83753fc55c/head.js/buggy/tools/test-harness/xpcshell-simple/head.js