<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <!-- ################################################# # 孤狼jQuery系列 # # *** 孤 狼 *** # QQ:312284609 # E-mail:wanyanjiabin@126.com # ################################################# --> <head> <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> <script type="text/javascript" src="http://files.cnblogs.com/flying-tx/3.js"></script> </head> <body bgcolor="#E0E0E0" onload="city()"> 多级关联菜单： <form name="frm"> <select id="s1"><option>省份</option></select> <select id="s2"><option>地级市</option></select> <select id="s3"><option>市、县级市、县</option></select> </form> </body> </html>