JavaScript仿2010世博會主頁flash焦點圖片切換_圖片特效特效

世博會主頁flash焦點圖片切換，現在用JavaScript模擬出來，效果還不錯吧，簡潔不失大方，平滑不失動感，我很喜歡的一款效果，希望大家也喜歡，并能用在你在網站上，不勝感激。

<html>
<head>
<meta http-equiv="Content-Type" mrc="text/html; charset=utf-8" />
<title>JavaScript仿2010世博會主頁flash焦點圖片</title>
<style type="text/css">
*{border:0;margin:0;border:0;list-style:none;}
body{padding:20px;background:url(http://p1.mb5u.com/texiao/1/20110225160541529.gif) center -40px no-repeat;color:#666;font-size:12px;text-align:center;padding-top:90px;}
#ts_bg{position:absolute;bottom:0;z-index:1;width:450px;height:36px;background:#000;filter:alpha(opacity=40);opacity:0.4;}
#pics li{position:absolute;top:0px;left:0px;}
#pics li img{filter:alpha(opacity=0);opacity:0;width:450px;height:296px;}/*圖片大小與框架保持一致*/
#ts li{position:absolute;z-index:2;left:0;bottom:-32px;height:32px;line-height:32px;font-size:14px;font-weight:bold;padding-left:16px;}
#ts li a{color:#fff; text-decoration:none;}/*標題鏈接樣式*/
#btn,#btn_bg{position:absolute;z-index:3;bottom:8px;right:8px;color:#fff;font-size:12px;}
#btn li,#btn_bg li{float:left;width:22px;height:18px;line-height:18px;overflow:hidden;text-align:center;margin-right:1px;}
#btn_bg li{background:#fff;filter:alpha(opacity=50);opacity:0.5;}
#btn li.current {background:#F60;}
</style>
<script type="text/javascript">
function $(id) {return document.getElementById(id);}
function $$(tag,id){return (id==undefined?document:this.$(id)).getElementsByTagName(tag);}
function poptit(tsID,n){//文字上下運動函數
	var ts = $$('li',tsID);
	var setway=function(obj,y){obj.style.bottom=y+'px';}
	var getway=function(obj){return parseInt(obj.style.bottom);}
	var up=function(){
		if (ts[n].movement) clearTimeout(ts[n].movement);//為了兼容變化中的點擊
		if (y1 == 0) return true;
		y1+=Math.ceil((0 - y1) / 5);
		setway(ts[n],y1);
		if(y1<0) ts[n].movement = setTimeout(up, 1);
	}
	var down=function(){
		if (ts[N].movement) clearTimeout(ts[N].movement);
		if (y2 == -32) return true;
		y2+=Math.floor((-32 - y2) / 5);
		setway(ts[N],y2);
		if(y2>-32) ts[N].movement = setTimeout(down, 1);
	}
	for(var i=0;i<ts.length;i++){
		if (!ts[i].style.bottom) ts[i].style.bottom = "-32px";
		if(ts[i].name=='up') var N=i;
	}
	if(!N&&n==0) {//開始載入...
		ts[n].name='up';
		var y1=getway(ts[n]);
		up();
		return true;
	} 
	if(N==n) return true;//防止快速移出移入的抖動
	ts[N].name=''//標記淡入的name為空
	ts[n].name='up';
	var y1=getway(ts[n]);
	var y2=getway(ts[N]);
	down();
	up();
}
function opa(pics,n){//圖片淡入淡出函數
	var pics = $$('img',pics);
	var setfade=function(obj,o){
		if (document.all) obj.style.filter = "alpha(opacity=" + o + ")";
		else obj.style.opacity = (o / 100);
	};
	var getfade=function(obj){
		return (document.all)?((obj.filters.alpha.opacity)?obj.filters.alpha.opacity:false):((obj.style.opacity)?obj.style.opacity*100:false);
	}
	var show=function(){
		if(pics[n].move) clearTimeout(pics[n].move);
		if (o1 == 100) return true;
		o1+=5;
		setfade(pics[n],o1);
		if(o1<100) pics[n].move=setTimeout(show,1);
	};
	var hide=function(){
		if(pics[N].move) clearTimeout(pics[N].move);
		if (o2 == 0) return true;
		o2-=5;
		setfade(pics[N],o2);
		if(o2>0) pics[N].move=setTimeout(hide,1);
	};
	for(var i=0;i<pics.length;i++){
		if(!getfade(pics[i])) setfade(pics[i],0);
		if(pics[i].name=='out') var N=i;
	}
	if(!N&&n==0) {//開始載入...
		pics[n].name='out';
		var o1=getfade(pics[n]);
		show();
		return true;
	}
	if(N==n) return true;
	pics[N].name=''
	pics[n].name='out';
	var o1=getfade(pics[n]);
	var o2=getfade(pics[N]);
	hide();
	show();
}
function classNormal() {//數字標簽樣式清除
    var focusBtnList = $$('li','btn');
    for (var i = 0; i < focusBtnList.length; i++) {
        focusBtnList[i].className = '';
    }
}
function autoFocusChange() {//自動運行
    if (atuokey) return;
    var focusBtnList = $$('li','btn');
    for (var i = 0; i < focusBtnList.length; i++) {
        if (focusBtnList[i].className == 'current') {
            var currentNum = i;
        }
    }
	if(currentNum<focusBtnList.length-1){
		poptit('ts',currentNum+1);
		opa('pics',currentNum+1);
       	classNormal();
       	focusBtnList[currentNum+1].className = 'current';
	}else if(currentNum==focusBtnList.length-1){
		poptit('ts',0);
		opa('pics',0);
       	classNormal();
       	focusBtnList[0].className = 'current';
	}
}
function focusChange() {//交互切換
    var focusBtnList = $$('li','btn');
    for (var i = 0; i < focusBtnList.length; i++) {
		focusBtnList[i].I=i;
		focusBtnList[i].onclick = function(){
        	poptit('ts',this.I);
			opa('pics',this.I);
        	classNormal();
        	focusBtnList[this.I].className = 'current';
		}
		focusBtnList[i].onmouseover = function(){
			this.style.backgroundColor='#f60';
			this.style.cursor='pointer';
		}
		focusBtnList[i].onmouseout = function(){
			this.style.backgroundColor='';
		}
	}
}
var atuokey = '';
function init(){//初始化
	$('btn_bg').innerHTML=$('btn').innerHTML;
	$('focus_change').removeChild($$('div','focus_change')[0]);
	poptit('ts',0);
	opa('pics',0);
    classNormal();
    $$('li','btn')[0].className = 'current';
	$('focus_change').onmouseover = function() {
        atuokey = true;
		clearInterval(auto);
    }
    $('focus_change').onmouseout = function() {
        atuokey = false;
		auto=setInterval('autoFocusChange()', T);
    }
}
var T=3000;//每幀圖片停留的時間，1000=1秒
var auto='';
window.onload=function(){
	init();
	focusChange();
	auto=setInterval('autoFocusChange()', T);
}
</script>
</head>
<body>
<div   class="bz7jpdt"   id="focus_change">
<div   class="7tb7nb5"   id="loading">請稍候...</div>
<div   class="nzf77hv"   id="ts_bg">文字標題的背景</div>
<div   class="dlphzj7"   id="btn_bg">數字標簽的背景</div>
<div   class="nb7tllr"   id="pics">
	<ul>
        <li><a href="#"><img src="http://p1.mb5u.com/texiao/1/20110225160541530.jpg" alt="^_^" /></a></li>
        <li><a href="#"><img src="http://p1.mb5u.com/texiao/1/20110225160541531.jpg" alt="^_^" /></a></li>
        <li><a href="#"><img src="http://p1.mb5u.com/texiao/1/20110225160541532.jpg" alt="^_^" /></a></li>
        <li><a href="#"><img src="http://p1.mb5u.com/texiao/1/20110225160541533.jpg" alt="^_^" /></a></li>
    </ul>
</div>
<div   class="rtltxxx"   id="ts">
	<ul>
        <li><a href="#">使用簡單，只需修改html內容和樣式</a></li>
        <li><a href="#">自定義框架(圖片)大小，標題當然也可調</a></li>
        <li><a href="#">也可以添加更多的幀/圖片，無需修改JS代碼</a></li>
        <li><a href="#">怎樣，使用是不是太簡單了？</a></li>
    </ul>
</div>
<div   class="p5j5nll"   id="btn">
	<ul>
    	<li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
    </ul>
</div>
</div>
</body>
</html>

所屬頻道：圖片特效特效/更新時間：2012-11-18

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