收藏一些JavaScript代码

<script type="text/javascript">
<!--
//收藏本站
function addfavorite(){
var title = "网站名称";
var url = window.location.href;
  if (document.all){
  window.external.addFavorite(url, title);
}else if (window.sidebar){
  window.sidebar.addPanel(title, url, "");
  }
}
//设为首页
function setHomepage(){// 设置首页   
var url=window.location.href;
if (document.all){   
document.body.style.behavior = 'url(#default#homepage)';
document.body.setHomePage(url);   
}else if (window.sidebar){   
if (window.netscape){   
try {   
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");   
}catch (e) {   
alert("该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true");   
}   
}   
var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);   
prefs.setCharPref('browser.startup.homepage', url);   
}   
}
//-->

</script>