(function($){ 
 $.fn.hoverDelay = function(options){ 
  var defaults = { 
   hoverDuring: 200, 
   outDuring: 200, 
   hoverEvent: function(){ 
    $.noop(); 
   }, 
   outEvent: function(){ 
    $.noop(); 
   } 
  }; 
  var sets = $.extend(defaults,options || {}); 
  var hoverTimer, outTimer; 
  return $(this).each(function(){ 
   $(this).hover(function(){ 
    clearTimeout(outTimer); 
    hoverTimer = setTimeout(sets.hoverEvent, sets.hoverDuring); 
   },function(){ 
    clearTimeout(hoverTimer); 
    outTimer = setTimeout(sets.outEvent, sets.outDuring); 
   }); 
  }); 
 } 
})(jQuery); 

$("#test").hoverDelay({ 
 hoverDuring: 1000, 
 outDuring: 1000, 
 hoverEvent: function(){ 
  $("#tm").show(); 
 }, 
 outEvent: function(){ 
  $("#tm").hide(); 
 } 
}); 

$("#test").hoverDelay({ 
 hoverEvent: function(){ 
  alert("经过 我！"); 
 } 
});