Here's the code which I am using to show the compose dialog box from facebook
var iframeDom=FB.XdComm.Server.singleton.createNamedHiddenIFrame('dialogContent','','fb_permission_iframe',null);
var myDialog=new FB.UI.PopupDialog('Title',iframeDom,true,false).show();
var userId = "user_id";
iframeDom.src=FBIntern.Utility.getFacebookUrl('www')+'inbox/'+'?compose&id='+userId+'&v='+FB.Facebook.version;//or any link that has ur dialog content..
myDialog.show();
I have also called FB.Init as well before calling the above code. I am getting FB.XdComm as undefined
I have also referenced http://connect.facebook.net/en_US/all.js under by body tag inside script tag.
Can anyone tell me what's missing