add: HideSearchColumn("idCol"); 
context: function searchOnLoad(){  initializeSearchWidgets();  initializeSearchWindowWidgets();  CreateMessenger();  gSearchBundle = document.getElementById("bundle_search");  setupDatasource();  setupSearchListener();  if (window.arguments && window.arguments[0])      selectFolder(window.arguments[0].folder);  onMore(null);  UpdateMailSearch("onload");    // hide and remove these columns from the column picker.  you can't thread search results  HideSearchColumn("threadCol"); // since you can't thread search results  HideSearchColumn("totalCol"); // since you can't thread search results  HideSearchColumn("unreadCol"); // since you can't thread search results  HideSearchColumn("unreadButtonColHeader");  HideSearchColumn("statusCol");  HideSearchColumn("sizeCol");  HideSearchColumn("flaggedCol");    // we want to show the location column for search  ShowSearchColumn("locationCol");}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/2d3146ea1015a54315edb282c4b1d01381dbfb56/SearchDialog.js/clean/mailnews/base/search/resources/content/SearchDialog.js