anchor.diff:  }
   
   function createCards(data) {
  +  $('.card').remove()
  +
     var card = contributions.select('.contributions_content')
       .selectAll('div')
       .data(data)
  
positive.code:     $('.contribution_card_expanded').velocity('fadeOut', { duration: 150 });
    });
  
    $('.card').on('click', function(e){
      e.preventDefault();
  
      $.ajax({
        type: "GET",
        dataType: "script",
        url: $(this).data("url")
      });
    });
  
    // Height definition, ToDo make it dynamic
    // var contribution_card_expanded_container = $('.contributions_container .contributions_content').height();
    $('.contribution_card_expanded_main_col').height('650');
  
negative.code: var current_user_id = <%= current_user.id %>;
  var format_date = d3.timeFormat("%Y-%m-%d");
  
  var cardnumber = 12;
  var page = 1
  
  var viewdata = data.slice((page-1)*cardnumber,page*cardnumber);
  
  var now = new Date;
  var px, py, vx, vy, offsetX, offsetY, maxVelocity = 8;
  
  