(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(dòng)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(dòng)運(yùn)行時(shí)間；
clickGoUpC:'.go_uplist', //點(diǎn)擊向上class;
clickDownUpC:'.go_downlist', //點(diǎn)擊向下class;
goStart:'go_tart',
autoCloss:'flase' //自動(dòng)運(yùn)行開關(guān),當(dāng)為'flase'時(shí)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(dòng)運(yùn)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(diǎn)擊向上移動(dòng)時(shí)；
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(diǎn)擊向下移動(dòng)時(shí)；
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">
<li><a href="#">1、曾參加過唐山、汶川、玉樹地震救援的援</a><a href="#">曾參加過唐，又來到了舟曲參加救援</a></li>
<li><a href="#">2、摩洛哥塞拉，藝術(shù)家在一場(chǎng)為流浪兒童為流浪兒童為流浪兒童為流浪兒童募捐的馬戲節(jié)目中表演</a></li>
<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(shì)力團(tuán)伙，繳獲...</a></li>
<li><a href="#">4、印度克什知自己的孩子在亂中喪生時(shí)痛不欲生..</a><a href="#">曾參加過唐曾參加過唐到了舟曲參加救援</a></li>
<li><a href="#">5、明昆明警方近日搗毀了尋甸縣的“洪興幫”黑惡勢(shì)力團(tuán)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>
<li><a href="#">8、湖北武漢漢曾參加過唐曾參加過唐曾參加過唐曾參加過唐集在江邊觀</a></li>
<li><a href="#">9、湖北武漢漢口漢口龍王廟景區(qū)觀景平臺(tái)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;}