//加入收藏夹          调用：javascript:addCookie();
function addCookie() {　
	if (document.all) {
		window.external.addFavorite(document.location.href,document.title);
	}
	else if (window.sidebar) {
		window.sidebar.addPanel(document.title,document.location.href,"")
	}
}
// 设置首页          调用：javascript:setHomepage();
function setHomepage() {　 
	if (document.all) {
		document.body.style.behavior = 'url(#default#homepage)';
		document.body.setHomePage(document.location.href);
	}
	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.location.href);
	}
} 
//菜单   鼠标划过之后 改变背景
function showdh(n,src){
	document.getElementById("defaultImg"+n).src=src;
}
function showdhout(n,src){
	document.getElementById("defaultImg"+n).src=src;
}