add: return true; 
context: function TriStateColumnSort(column_name){    debug("TriStateColumnSort("+column_name+")");    var current_column = find_sort_column();    var current_direction = find_sort_direction(current_column);    var column = document.getElementById(column_name);    if (!column) return false;    var direction = "ascending";    if (column == current_column) {        if (current_direction == "ascending") {            direction = "descending";        } else if (current_direction == "descending") {            direction = "natural";        }    }    sort_column(column, direction);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/a3fd1360f8a3ed6857cc435f9c9b5e8b3cdd9ef2/bookmarks.js/clean/xpfe/components/bookmarks/resources/bookmarks.js