一次点击按钮全屏遮罩锁屏效果,再次点击退出


直接全部锁屏效果,关键是点一次可以退出效果,喜欢的试试
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html;charset=gb2312">
<title>网页特效 全屏遮罩锁屏效果 站长特效网</title>
<style type="text/css">
#www_zhaoxi_net{visibility:hidden;position:fixed;top:0;left:0;z-index:1987;width:100%;height:100%;background:#000;filter:alpha(opacity=70);opacity:0.7;}
/*IE6 fixed*/
* html{background:url(*) fixed;}
* html body{margin:0;height:100%;}
* html #www_zhaoxi_net{position:absolute;left:expression(documentElement.scrollLeft+documentElement.clientWidth-this.offsetWidth);top:expression(documentElement.scrollTop+documentElement.clientHeight-this.offsetHeight);}
</style>
<script language="javascript">
(function(){
 // 获取对象
 var $ = function (id){
  return document.getElementById(id);
 };
 // 遍历
 var each = function(a, b) {
  for (var i = 0, len = a.length; i < len; i++) b(a[i], i);
 };
 // 事件绑定
 var bind = function (obj, type, fn) {
  if (obj.attachEvent) {
   obj['e' + type + fn] = fn;
   obj[type + fn] = function(){obj['e' + type + fn](window.event);}
   obj.attachEvent('on' + type, obj[type + fn]);
  } else {
   obj.addEventListener(type, fn, false);
  };
 };
 // 移除事件
 var unbind = function (obj, type, fn) {
  if (obj.detachEvent) {
   try {
    obj.detachEvent('on' + type, obj[type + fn]);
    obj[type + fn] = null;
   } catch(_) {};
  } else {
   obj.removeEventListener(type, fn, false);
  };
 };
 // 阻止浏览器默认行为
 var stopDefault = function(e){
  e.preventDefault ? e.preventDefault() : e.returnValue = false;
 };
 // 获取页面滚动条位置
 var getPage = function(){
  var dd = document.documentElement,
   db = document.body;
  return {
   left: Math.max(dd.scrollLeft, db.scrollLeft),
   top: Math.max(dd.scrollTop, db.scrollTop)
  };
 };
 // 锁屏
 var lock = {
  show: function(){
   $('www_zhaoxi_net').style.visibility = 'visible';
   var p = getPage(),
    left = p.left,
    top = p.top;
   // 页面鼠标操作限制
   this.mouse = function(evt){
    var e = evt || window.event;
    stopDefault(e);
    scroll(left, top);
   };
   each(['DOMMouseScroll', 'mousewheel', 'scroll', 'contextmenu'], function(o, i) {
     bind(document, o, lock.mouse);
   });
   // 屏蔽特定按键: F5, Ctrl + R, Ctrl + A, Tab, Up, Down
   this.key = function(evt){
    var e = evt || window.event,
     key = e.keyCode;
    if((key == 116) || (e.ctrlKey && key == 82) || (e.ctrlKey && key == 65) || (key == 9) || (key == 38) || (key == 40)) {
     try{
      e.keyCode = 0;
     }catch(_){};
     stopDefault(e);
    };
   };
   bind(document, 'keydown', lock.key);
  },
  close: function(){
   $('www_zhaoxi_net').style.visibility = 'hidden';
   each(['DOMMouseScroll', 'mousewheel', 'scroll', 'contextmenu'], function(o, i) {
    unbind(document, o, lock.mouse);
   });
   unbind(document, 'keydown', lock.key);
  }
 };
 bind(window, 'load', function(){
  $('zhaoxi_net').onclick = function(){
   lock.show();
  };
  $('www_zhaoxi_net').onclick = function(){
   lock.close();
  };
 });
})();
</script>
</head>
<body>
<a href="http://www.zhaoxi.net/">banner制作</a>,站长必备的免费广告条制作网站。zhaoxi.net，简单实用。<hr>
<button id="zhaoxi_net" style="position:absolute;left:50%;top:40%;">开启锁屏</button>
<ol id="test">
  <li>朝夕网，打造国内最好的banner\logo在线制作网站！</li>
</ol>
<div id="www_zhaoxi_net"></div>
</body>
</html>