var isIE=(document.all&&document.getElementById&&!window.opera)?true:false; 
var isMozilla=(!document.all&&document.getElementById&&!window.opera)?true:false; 
var isOpera=(window.opera)?true:false;
var seturl='url(#default#homepage)';
var weburl='http://www.huabeihp.com';
var webname='天津华北医院!';

function myhomepage()	{
	if(isMozilla){
		try {netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");} 
		catch (e){alert("此操作被浏览器拒绝！\n请在浏览器地址栏输入“about:config”并回车\n然后将[signed.applets.codebase_principal_support]设置为'true'");}
		var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
		prefs.setCharPref('browser.startup.homepage',weburl);
	}
	if(isIE){
		this.homepage.style.behavior=seturl;this.homepage.sethomepage(weburl); 
	}
}

function addfavorite()
{
	if(isMozilla){
		if (document.all){ window.external.addFavorite(weburl,webname);}
		else if (window.sidebar){ window.sidebar.addPanel(webname, weburl,"");}
	}
	if(isIE){window.external.AddFavorite(weburl, webname);}	
}