var comet_passport=
{
	// 查询Passport当前登录用户的session_id
	get_passport_session: function( client_callback, policy )
	{
		if ( typeof(policy) == undefined || policy == null  )
		{
			$.ajax(
			{  
				dataType: 'jsonp',  
				data: 'type=js',  
				jsonp: 'jsonp_callback',  
				url: 'http://www.cometid.com/passport/query', 
				success: function ( data ) 
				{    
					client_callback( data.sid );
				},
				
			});	
		}
		else
		{
			$.ajax(
			{  
				dataType: 'jsonp',  
				data: 'type=js',  
				jsonp: 'jsonp_callback',  
				url: 'http://www.cometid.com/passport/query?policy='+policy, 
				success: function ( data ) 
				{    
					client_callback( data.sid );
				},
				
			});	
		}
	}
};