动态删减选项卡的效果示例
<html><head> <title>163邮箱选项卡效果</title> <script> </script> <style> ul,li { margin:0; padding:0; list-style:none; /*for close location*/ position:relative; } li { display:block; width:130px; height:25px; float:left; cursor:pointer; overflow:hidden; } span { font-size:10pt; color:#22b5d9; font-weight:bold; display:block; } #asgardCard li { font-size:10pt; font-weight:bold; color:#22b5d9; border:1px solid #22b5d9; margin:10px; text-align:center; line-height:1.5; } </style> <style> /*Asgard CardProgram Css Start*/ #itemsPanel,#itemsPanel li { margin:0; padding:0; list-style:none; /*for close location*/ position:relative; } /*Clear Float：Referrence-->http://www.blueidea.com/tech/web/2005/3065.asp*/ /*There is defect:the attribute-content hold one line place.*/ ul:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; } #cardContent { height:auto; min-height:300px; border:2px solid #cccccc; clear:both; } #itemsPanel li { display:block; width:130px; height:25px; float:left; cursor:pointer; overflow:hidden; } #cardFrame { width:100%;height:100%;border:1px solid #ffffff;margin:0; } .active { background:url('http://bbs.blueidea.com/attachments/2007/8/20/20070820_b3321ab700a7e293b3ceJODnkLUsGEhy.jpg') 0 0 no-repeat; } .default { background:url('http://bbs.blueidea.com/attachments/2007/8/20/20070820_b3321ab700a7e293b3ceJODnkLUsGEhy.jpg') 0 -25px no-repeat; } .title { font-size:10pt; font-weight:bold; line-height:2; padding-left:10px; display:block; width:105px; height:25px; } li .close { position:absolute; top:9px; left:115px; display:block; width:10px; height:10px; overflow:hidden; } .active .close { background:url('http://bbs.blueidea.com/attachments/2007/8/20/20070820_b3321ab700a7e293b3ceJODnkLUsGEhy.jpg') 0 -50px no-repeat; } .default .title { color:#999999; } .active .title { color:#000000; } .active .close:hover { background:url('http://bbs.blueidea.com/attachments/2007/8/20/20070820_b3321ab700a7e293b3ceJODnkLUsGEhy.jpg') -10px -50px no-repeat; } .default .close { background:url('http://bbs.blueidea.com/attachments/2007/8/20/20070820_b3321ab700a7e293b3ceJODnkLUsGEhy.jpg') -20px -50px no-repeat; } .default .close:hover { background:url('http://bbs.blueidea.com/attachments/2007/8/20/20070820_b3321ab700a7e293b3ceJODnkLUsGEhy.jpg') -30px -50px no-repeat; } /*Asgard CardProgram Css End*/ </style></head><body><span>1.代码效果示例：</span><ul> <li title="关闭"></a> </li> <li title="关闭"></a> </li> </ul><p /><span>注：以上代码为DOM动态组织的代码参考<span><p style="clear:both;"/><p /><span>2.点击下表，更换内容</span><ul id="asgardCard"><li title="blueidea">蓝色理想</li><li title="google">Google中国</li><li title="email126">Email-126</li><li title="ngacn">艾泽拉斯</li></ul><p style="clear:both;"/><span>3.以下为动态创建：</span><div> <ul id="itemsPanel"> </ul> <div id="cardContent"> <iframe id="cardFrame"> </iframe> </div></div></body><script>/** Field Declare ^-^ */var Asgard;if(!Asgard) Asgard={};if(!Asgard.CardProgram) Asgard.CardProgram={};/**function:define Object ItemsPanel*/Asgard.CardProgram.ItemsPanel=function(id,frameId){ this.element=$(id); this.register=new Array(); this.currentItem=null; this.cardFrame=$(frameId); this.element.className='itemsPanel';}/**function:add item from panel*/Asgard.CardProgram.ItemsPanel.prototype.addItem=function(item){ if(this.validateExist(item.element.getAttribute('id'))) return; item.panel=this; this.visitedRegister(item,"add"); this.element.appendChild(item.element);}/**function:delete item from panel*/Asgard.CardProgram.ItemsPanel.prototype.deleteItem=function(item){ this.visitedRegister(item,"delete"); this.element.removeChild(item.element);}/**Ajax or other */Asgard.CardProgram.ItemsPanel.prototype.changeSubPage=function(){ if(this.register.length==0) { this.cardFrame.src=""; return; } this.cardFrame.src=this.currentItem.url; /* *这里用户可以自己定义想要的页面，如果你想内嵌IFrame。 */}Asgard.CardProgram.ItemsPanel.prototype.validateExist=function(id){ for(var i=0;i<this.register.length;i++) { if(this.register[i].element.id==id) { return true; } } return false;}/**function:register visited sequence* type--add | delete | active*/Asgard.CardProgram.ItemsPanel.prototype.visitedRegister=function(item,type){ var i=this.register.length; if(type=="add") { for(var k=0;k<i;k++) { this.register[k].resetItem(); } this.currentItem=item; this.register[i]=item; this.currentItem.element.className="active"; this.changeSubPage(); } else if(type=="delete") { for(k=0;k<i;k++) { if(this.register[k]==item) { this.register.splice(k,1); break; } } if(item==this.currentItem) { i=this.register.length; if(i>0) { this.currentItem=this.register[i-1]; this.currentItem.element.className="active"; } else this.currentItem=null; } this.changeSubPage(); } else if(type=="active") { if(this.currentItem==item) return; else { for(k=0;k<i;k++) { if(this.register[k]==item) { this.register.splice(k,1); break; } } i=this.register.length; for(k=0;k<i;k++) { this.register[k].resetItem(); } this.currentItem=item; this.register.push(item); } this.changeSubPage(); }}/**function:define Object Item*/Asgard.CardProgram.Item=function(id,title,url,flag){ this.element=this.$C(); this.panel={}; this.id=id; this.title=title; this.url=url; this.flag=flag; this.init();};/**function:init item*/Asgard.CardProgram.Item.prototype.init=function(){ this.element.setAttribute('id',this.id); this.element.className="default"; var mirror=this; if(!this.flag) { this.element.innerHTML="<nobr class='title' title='"+this.title+"'>"+this.title+"</nobr>"+"<a href='#nogo' class='close' title='关闭'></a>"; this.addEventListener(this.$ES(this.element,'nobr')[0],'click',function(){mirror.activeItem();}); this.addEventListener(this.$ES(this.element,'a')[0],'click',function(){mirror.destroyItem();}); } else { this.element.innerHTML="<nobr class='title' title='"+this.title+"'>"+this.title+"</nobr>"; this.addEventListener(this.$ES(this.element,'nobr')[0],'click',function(){mirror.activeItem();}); } }/**active item*/Asgard.CardProgram.Item.prototype.activeItem=function(){ this.panel.visitedRegister(this,"active"); this.element.className="active"; }/**function:reset item*/Asgard.CardProgram.Item.prototype.resetItem=function(){ this.element.className="default"; }/**function:destroy item*/Asgard.CardProgram.Item.prototype.destroyItem=function(){ this.panel.deleteItem(this);}/**function:addListener to item*/Asgard.CardProgram.Item.prototype.addEventListener=function(element,type,handler){ if(element.addEventListener) element.addEventListener(type,handler,true); else element.attachEvent("on"+type,handler,true);}/**function:usefull functions*/Asgard.CardProgram.Item.prototype.$C=function(tag){ if(tag && typeof tag =="string") return document.createElement(tag); else return document.createElement('li');}Asgard.CardProgram.Item.prototype.$ES=function(element,tag){ return element.getElementsByTagName(tag);}function $(id){ return document.getElementById(id);}</script><script>function attachExampleEvent(){ var lists=$('asgardCard').getElementsByTagName('li'); for(var i=0;i<lists.length;i++) { lists[i].onclick=exampleClickListener; }}function exampleClickListener(e){ e=e || window.event; var source=e.target || e.srcElement; if(source.getAttribute('title')=='blueidea') { itemsPanel.addItem(new Asgard.CardProgram.Item("blueidea","蓝色理想","http://www.blueidea.com",false)); } else if(source.getAttribute('title')=='google') { itemsPanel.addItem(new Asgard.CardProgram.Item("google","Google中国","http://www.google.cn",false)); } else if(source.getAttribute('title')=='email126') { itemsPanel.addItem(new Asgard.CardProgram.Item("email126","Email-126","http://mail.126.com",false)); } else if(source.getAttribute('title')=='ngacn') { itemsPanel.addItem(new Asgard.CardProgram.Item("ngacn","艾泽拉斯","http://www.ngacn.com",false)); } }var itemsPanel=null;function exampleStartMethod(){ attachExampleEvent(); if(itemsPanel==null) itemsPanel=new Asgard.CardProgram.ItemsPanel("itemsPanel","cardFrame"); itemsPanel.addItem(new Asgard.CardProgram.Item("index","时空创意","http://www.skst.com.cn",true)); }window.onload=exampleStartMethod;</script></html><a href="http://js.alixixi.com/">欢迎访问阿里西西网页特效代码站，js.alixixi.com</a>?
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来自：http://www.alixixi.com/Dev/HTML/jsrun/color/2008/2008051280191.html