rem: this.isValid   = aSelection.isValid; 
context: function BookmarkMoveTransaction (aAction, aSelection, aTarget){  this.wrappedJSObject = this;  this.type      = "move";  this.action    = aAction;  this.selection = aSelection;  this.target    = aTarget;  this.isValid   = aSelection.isValid;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/deb907dede6accfbec295282501589d13a5b1c23/bookmarks.js/buggy/browser/components/bookmarks/content/bookmarks.js