add:  var promptService       = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(Components.interfaces.nsIPromptService); var gNavigatorBundle    = document.getElementById("bundle_navigator"); var promptTitle         = gNavigatorBundle.getString("wallpaperConfirmTitle"); var promptMsg           = gNavigatorBundle.getString("wallpaperConfirmMsg"); var promptConfirmButton = gNavigatorBundle.getString("wallpaperConfirmButton");  var buttonPressed = promptService.confirmEx(window, promptTitle, promptMsg, (promptService.BUTTON_TITLE_IS_STRING * promptService.BUTTON_POS_0) + (promptService.BUTTON_TITLE_CANCEL    * promptService.BUTTON_POS_1), promptConfirmButton, null, null, null, {value:0});  if (buttonPressed != 0) return;  
context:     setWallpaper: function() {      var winhooks = Components.classes[ "@mozilla.org/winhooks;1" ].                       getService(Components.interfaces.nsIWindowsHooks);            winhooks.setImageAsWallpaper(this.target, false);    },    
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/174c6f7b9f4258bbdaa0fb041be1fcd764ed827e/nsContextMenu.js/buggy/suite/common/nsContextMenu.js