Menus in 2 objects

In your menu calling a menu in another object :

if(message == "button pushed") // This being the button you push on the menu to call the other menu.

{
llMessageLinked(link_number,"","Open Menu", "");
llListenRemove(this_object's_listener); //Close the listener of the old menu.
}


In your object receiving a message to open it's menu:

 link_message(integer sender_num, integer num, string msg, key id))
{
if (message == "Open Menu")
{

listen_handle = llListen(channel,"","",""); // open a new listener for the menu

llDialog(...) ; //open the menu
}
}