function addBookmark(title,url) 
{
	if (window.sidebar) 
	{ 
		window.sidebar.addPanel(title, window.location.href,""); 
	} 
	else if( document.all ) 
	{
		window.external.AddFavorite( window.location.href, title);
	} else if( window.opera && window.print ) 
	{
		return true;
	}
}
function setHomepage(domain)
{
	if (document.all)
	{
		try
		{
			document.body.style.behavior='url(#default#homepage)';
			document.body.setHomePage(domain);
		}
		catch(e)
		{}
	}
	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',domain);
	}
}

function checksearch(){
		var node = document.getElementById('keyword');
		if(node.value == ''){
			alert('请输入关键字！');
			node.focus();
			return false;
		}
	}