AJAX Cascading dropdown without updatepanel?

I want to make a cascading dropdown list without using an UpdatePanel. I need tips for starting out this task. Currently,

1. I am using asp.net 2.0
2. Will I be able to parse JSON in VSS 2005 if 开发者_开发百科I use JQuery ?
3. What is the recommended alternate for UpdatePanel in Visual Studio 2005 ?

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If you use web forms , an alternative way is to create PageMethods and call them from JavaScript and fill the select with jQuery.

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I will recommend jquery.Create a webservice in your project and call the webservice from jquery and parse the json result on UI.

Check out this link.

If you have any doubt let me know.