$('.job').draggable({

    zIndex: 20,
    revert: 'invalid',
    helper: 'original',
    distance: 30,
    refreshPositions: true,
    });

$('.drag').draggable({
   scroll:true,
   start: function(){
      $(this).data("startingScrollTop",$(this).parent().scrollTop());
   },
   drag: function(event,ui){
      var st = parseInt($(this).data("startingScrollTop"));
      ui.position.top -= $(this).parent().scrollTop() - st;
   }
});