Do the following
- 1. Go to http://jquery.comand then to Download
- 2. find the latest Jquery min (select the minified version, at the time of writing http://code.jquery.com/jquery-1.6.1.min.js was the latest)
- 3. Now go to CRM 2011 and create a web resource
- 4. Add the new Web resource by name JQueryMin1.6.1 (JQuryMin)
- 5. Upload the Downloaded file to JQuery to this web resource.
- 6. Now add this web resource to which ever form you want to use JQuery api
Hope this helps.