Former post focused on the chained select box with ajax select,but how to do that without ajax using rails? This following url can performance well: www.bigbold.com/snippets/posts/show/1916 but it can only work under firefox,while not worked in ie because it use the HTMLSelectElement.prototype,while ie does not support i am still working to modify the source of the above url,but not successful till now,anyone can help me with this? very grateful! Charlie -- Posted via http://www.ruby-forum.com/.