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: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/291ba420cabcd0825293fcca2c98f45f0b4a2418/bookmarksManager.js/buggy/xpfe/components/bookmarks/resources/bookmarksManager.js