this.addMinutes(there - here); return this; 
return this.addMinutes(there - here); 
Date.prototype.setTimezoneOffset = function (s) {    var here = this.getTimezoneOffset(), there = Number(s) * -6 / 10;    this.addMinutes(there - here);     return this;};
4137	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4137/a523a50f53e184005249ace116aee668ca2dd78b/core-debug.js/clean/core-debug.js