rem: function lbox_enum (callback) 
add: function lbox_enum (callback, data) 
context: function lbox_enum (callback){    var i = 0;    var current = this.listContainer.firstChild;        while (current)    {        callback (current, i++);        current = current.nextSibling;    }    }
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/7d1bdb74c797a650a6fa1487f7c45d23b19b2497/listbox.js/buggy/extensions/irc/xul/lib/listbox.js