document.write('&nbsp;&nbsp;·<a href="book.asp?cls=00010003">名词解释</a><br>');document.write('&nbsp;&nbsp;·<a href="book.asp?cls=00010002">知识解答</a><br>');document.write('&nbsp;&nbsp;·<a href="book.asp?cls=00010001">购房指导</a><br>');