function doSetHomepage() {
	
	var url = "http://www.youdaxue.com";
	
	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("您的浏览器不支持此功能，您可以通过手动方式设置此主页。");
				}
			}
			var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
			prefs.setCharPref("browser.startup.homepage", url);
		}
	}
}

function bookmark() {
	var title = document.title;
	var url = document.location.href;
	if (window.sidebar) {
		window.sidebar.addPanel(title, url,"");
	} else if ( window.opera && window.print ){
		var mbm = document.createElement('a');
		mbm.setAttribute('rel','sidebar');
		mbm.setAttribute('href',url);
		mbm.setAttribute('title',title);
		mbm.click();
	} else if ( document.all ) {
		window.external.AddFavorite( url, title);
	}
}