rem: var node = this.hash[key] 
context:     this.remove = function(key) {        // remove this listItem and its corresponding hash entry        var node = this.hash[key]        // will this work? relying on garbage collection?        this.hash[key] = null;        Element.remove(node);        this.lastModified = new Date();    }
meta: 952	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/952/d247a1b6dacb7417d1b16dd5d23f8786e47c143b/query.js/buggy/query.js