  With the development of network and the World Wide Web (WWW), the Internet
has been growing and changing dramatically. More and more on-line database
systems and different kinds of services are available for astronomy research.
How to help users find their way through the jungle of information services
becomes an important challenge. Although astronomers have been aware of the
importance of interoperability and introduced the concept of Virtual
Observatory as a uniform environment for future astronomical on-line resources
and services, transparent access to heterogeneous on-line information is still
difficult.
  SkyMouse is a lightweight interface for distributed astronomical on-line
resources and services, which is designed and developed by us, i.e., Chinese
Virtual Observatory Project. Taking advantage of screen word-capturing
technology, different kinds of information systems can be queried through
simple mouse actions, and results are returned in a uniform web page. SkyMouse
is an easy to use application, aiming to show basic information or to create a
comprehensive overview of a specific astronomical object.
  In this paper current status of on-line resources and services access is
reviewed; system architecture, features and functions of SkyMouse are
described; challenges for intelligent interface for on-line astronomical
resources and services are discussed.
