function f(n,r){
    var tick = document.getElementById('subBox'+n);
    var m = document.getElementById('li'+n);
    tick.style.display='block';
    m.className='item_hover';
}

function O(n,r){
    var tick = document.getElementById('subBox'+n);
    var m = document.getElementById('li'+n);
    tick.style.display='none';
    m.className='';

}