old_contents: $(function(){
    var
    $start = $('#start'),
    $btns = $('.btns .btn'),
    colors = ['#1ABC9C','#2ECC71','#3498DB','#34495E','#9B59B6','#F1C40F','#E67E22','#E74C3C','#7F8C8D','#2980B9','#95A5A6','#C0392B','#D35400','#F39C12','#666'],
    selected = null,
    rnd = function(min,max){
      return  Math.floor(Math.random()*(max-min+1)+min);
    },
    randColor = function(){
      return colors[rnd(0,colors.length-1)];
    },
    setColors = function(){
      $btns.each(function(){
        $(this).css({
          'background-color': randColor()
        });
      });
    },
    exploid = function(){
      $btns.each(function(){
        $(this).animate({
          left : rnd(0,90) + '%',
          top : rnd(0,90) + '%'
        },400);
      });
    },
    choose1 = function(){
  
    },
    start = function(){
      exploid();
      $btns.click(choose1);
    },
    reset = function(){
      window.location.reload(); // cheap as posible !
    },
    init = function(){
      $start.click(start);
      setColors();
    };
  
    init();
  
  });
new_contents: $(function(){
    var
    $start = $('#start'),
    $btns = $('.btns .btn'),
    colors = ['#1ABC9C','#2ECC71','#3498DB','#34495E','#9B59B6','#F1C40F','#E67E22','#E74C3C','#7F8C8D','#2980B9','#95A5A6','#C0392B','#D35400','#F39C12','#666'],
    selected = null,
    rnd = function(min, max){
      return  Math.floor(Math.random()*(max-min+1)+min);
    },
    randColor = function(){
      return colors[rnd(0, colors.length-1)];
    },
    setColors = function(){
      $btns.each(function(){
        $(this).css({
          'background-color' : randColor()
        });
      });
    },
    exploid = function(){
      $btns.each(function(){
        $(this).animate({
          left : rnd(0, 90) + '%',
          top : rnd(0, 90) + '%'
        }, 400);
      });
    },
    choose1 = function(){
  
    },
    start = function(){
      exploid();
      $btns.click(choose1);
    },
    reset = function(){
      window.location.reload(); // cheap as posible !
    },
    init = function(){
      $start.click(start);
      setColors();
    };
  
    init();
  
  });
subject: Add some space