rem: bookmarksView.toggleColumnVisibility(resource); 
add: bookmarksView.toggleColumnVisibility(colid); 
context: function onViewMenuColumnItemSelected(aEvent){  var resource = aEvent.target.getAttribute("resource");  if (resource != "") {    var bookmarksView = document.getElementById("bookmarks-view");    bookmarksView.toggleColumnVisibility(resource);  }    aEvent.preventBubble();}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/74ea8a7d528fdb7d98efbad3ac163ebf39775433/bookmarksManager.js/clean/suite/common/bookmarks/bookmarksManager.js