rem: return eval(this.header('X-JSON')); 
add: return eval('(' + this.header('X-JSON') + ')'); 
context:   evalJSON: function() {    try {      return eval(this.header('X-JSON'));    } catch (e) {}  },
meta: 2320	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2320/19200c26046dc00f15305e03b7c1d28b4c38c952/prototype.js/clean/web/scripts/prototype.js