$(function(){
  $('.sliderthing').hover(function(e){
    var panes  = $('.type-panes .pane'),
      hopefull = $($(e.target).closest('[data-pane]').attr('data-pane')),
      target   = hopefull.length > 0 ? hopefull : panes;
    
    panes.hide();
    target.
      first().
      slideDown('fast');
  
   },function(){
     jQuery('.type-panes .pane').slideUp();
  });
  
  $('.sliderthing').hover(function(){
    var element = $(this),
    paneId = element.attr('data-pane'),
    pane   = $(paneId);
  
    pane.show().siblings().hide();
  },$.noop());
});