var Display= new JS.Class({
  initialize: function(total) {
    this.selected= 1
    this.total= total
    this.html= $('<div class="ss-display"></div>');
    this.update()
  },

  update: function() {

    this.text= this.selected.nice() + ' / ' + this.total.nice()
    this.html.text(this.text)
  },

  next_slice: function() {
    this.selected++
    this.update()
  },

  prev_slice: function() {
    this.selected--
    this.update()
  }
});