(function($){
$.fn.extend({
newsList:function(options){
var defaults ={
actName:'li', //顯示條數(shù)名；
maxShowNum:'6', //最多的顯示條數(shù)；
actNameH:'28', //一次移動的距離；
ulClass:'.ul_news_list', //被復(fù)制層的class
copyUlClass:'.ul_news_list2', //復(fù)制層的class
autoTime:'1500', //自動運行時間；
clickGoUpC:'.go_uplist', //點擊向上class;
clickDownUpC:'.go_downlist', //點擊向下class;
goStart:'go_tart',
autoCloss:'flase' //自動運行開關(guān),當(dāng)為'flase'時為開，其它則關(guān)；
} ;

options = $.extend(defaults, options);
return this.each(function(){
var o = options;
var counts =1;
var linum = $($(this).find(o.actName),$(this)).size();
var ul_class = $($(this).find(o.ulClass),$(this));
var copy_ul_class = $($(this).find(o.copyUlClass),$(this));
var click_go_up_c = $($(this).find(o.clickGoUpC),$(this));
var click_go_down_C = $($(this).find(o.clickDownUpC),$(this));
var go_start = $($(this).find(o.goStart),$(this));
if(linum > o.maxShowNum){
$(copy_ul_class).html($(ul_class).html());
goStartList();
}
var thiswrap = $($(ul_class).parent().parent(),$(this));
//自動運行函數(shù)
function auto_function(){
if(counts <= linum){
$(ul_class).animate({top:'-=' + o.actNameH},o.autoTime);
$(copy_ul_class).animate({top:'-=' + o.actNameH},o.autoTime);
counts++;
}else{
$(ul_class).animate({top:0},0);
$(copy_ul_class).animate({top:0},0);
counts = 1;
}
}
//點擊向上移動時；
if(linum > o.maxShowNum){
$(click_go_up_c).click(function(){
if(counts <= linum){
$(ul_class).animate({top:'-=' + o.actNameH},0);
$(copy_ul_class).animate({top:'-=' + o.actNameH},0);
counts++;
}else{
$(ul_class).animate({top:0},0);
$(copy_ul_class).animate({top:0},0);
counts = 1;
}
});
}
//點擊向下移動時；
if(linum > o.maxShowNum){
$(click_go_down_C).click(function(){
if(counts > 1){
counts--;
$(ul_class).animate({top:'-'+ counts*o.actNameH},0);
$(copy_ul_class).animate({top:'-'+ counts*o.actNameH},0);
}else{
$(ul_class).animate({top:0},0);
$(copy_ul_class).animate({top:0},0);
counts = linum+1;
}
});
}
//鼠標(biāo)經(jīng)過所發(fā)生的開始停止；
if(linum > o.maxShowNum){
$(thiswrap).hover(function(){
goStopList();
},function(){
goStartList();
});
}
function goStartList(){
if(o.autoCloss === 'flase'){
go_start = setInterval(auto_function,o.autoTime);
}
}
function goStopList(){
clearInterval(go_start);
}
});
}
});
}(jQuery));

<script language="javascript">
$(document).ready(function(){
$("#newslist").newsList();
});
</script>

<div id="newslist">
<div class="go_upanddown"><span class="go_uplist"><img src="images/newslist/goupbtn.gif" /></span><span class="go_downlist"><img src="images/newslist/godownbtn.gif" /></span></div>
<div class="news_list_bar">
<ul class="ul_news_list">
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<li><a href="#">3、昆明警方近日縣的“洪興甸縣的“洪興甸縣的“洪興甸縣的“洪興幫”黑惡勢力團伙，繳獲...</a></li>
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<li><a href="#">5、明昆明警方近日搗毀了尋甸縣的“洪興幫”黑惡勢力團伙，繳獲...</a></li>
<li><a href="#">6、曾參加過唐曾參加過唐曾參加過唐曾參加過唐</a></li>
<li><a href="#">7、湖北武漢漢口漢口曾參加過唐曾參加過唐曾參加過唐曾參加過唐觀看兩江洪峰過</a></li>
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<li><a href="#">9、湖北武漢漢口漢口龍王廟景區(qū)觀景平臺上，市民聚集在江邊觀看兩江洪峰過漢</a></li>
</ul>
<ul class="ul_news_list2"></ul>
</div>
</div>

body { font-family:"微軟雅黑",Arial,"Lucida Grande", Verdana, Lucida; font-size:12px; }
*{ padding:0; margin:0;}
img { border:0;}
.clear { clear:both;}
a { color:#000; text-decoration:none;}
a:hover { color:#EC6104; text-decoration:none;}
.undis { display:none;}/*news_list*/
.news_list_bar { position:relative; width:560px; height:168px; overflow:hidden; background:url(../images/slideshow2/v3_picture6.gif) repeat-y; background-color:#F00;}
.ul_news_list,
.ul_news_list2{ position:relative; list-style:none;}
.ul_news_list li,
.ul_news_list2 li{line-height:28px; height:28px; width:500px; overflow:hidden; white-space:nowrap;padding:0 20px;}
.ul_news_list li a,
.ul_news_list2 li a{ padding-right:20px;}
.go_upanddown { position:absolute; margin:-20px 0 0 500px;}
.go_upanddown span { padding-right:10px; cursor:pointer;}