关于鼠标悬停，事件延时触发的解决

<ul id="psd_pointer_list">
<li>1</li>
<li>2</li>
</ul>

// 鼠标悬停，事件延迟2秒执行
(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, that = this;
return $(this).each(function(){
$(this).hover(function(){
clearTimeout(outTimer);
hoverTimer = setTimeout(function(){sets.hoverEvent.apply(that)}, sets.hoverDuring);
},function(){
clearTimeout(hoverTimer);
outTimer = setTimeout(function(){sets.outEvent.apply(that)}, sets.outDuring);
});
});
}
})(jQuery);

$.each($("#psd_pointer_list").find("li"), function(a, e){
$(e).hoverDelay({
hoverEvent: function(){
alert("ok");
}
});
});