function select_all(){
    var boxes = getElementsByClass('selectFoundFriend', document, 'input');
    for( var i=0; i<boxes.length; i++ ){
      boxes[i].checked = true;
      boxes[i].className = 'selectFoundFriend selected';
    }
  }

  function select_none(){
    var boxes = getElementsByClass('selectFoundFriend selected', document, 'input');
    for( var i=0; i<boxes.length; i++ ){
      boxes[i].checked = false;
      boxes[i].className = 'selectFoundFriend';
    }
  }


function check_me( id ){
  $('#check'+id).addClass('selected');
}