http://blog.csdn.net/ejc2001/article/details/26246723
Structure -> Menu s -> Main menu :
1. click edit menu 2. MULTILINGUAL OPTIONS: Translate and Localize. Menu
items with language will allow translations. Menu items without language will be localized.
Structure -> Menu s -> Main menu :
1. click list links 2. add link or edit menu
***** "path" set <front> or node is different.
<front>:every page show menu
node: only language show language menu