每次参加饭局，酒准少不了，你来我往，推杯换盏，觥筹交错，好不热闹，往往不知不觉就喝了好多酒，那么觥筹交错是什么意思呢？
I want to modify this code which works pretty good but (or I don\'t know because I\'m new with php) I can\'t limit the number of li\'s displayed for the main elements in the menu. The actual code will
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