$(function(){
	$("#nav li").hover(function(){
		$(this).children("ul").css('display', 'block');
	}, function(){
		$(this).children("ul").css('display', 'none');
	});
})
 
//设为首页
function setHomepage(){
  if (document.all){
    document.body.style.behavior='url(#default#homepage)';
    document.body.setHomePage(document.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',document.URL);
    }
}
//加入收藏
function addFavourite()
{
    if (document.all)
       {
         window.external.addFavorite(document.URL,document.title);
       }
      else if (window.sidebar)
      {
          window.sidebar.addPanel(document.title,document.URL,"");
    }
}