Deploying to Azure - controls not working

I have a standard asp.net application which uses Telerik UI for ASP.net AJAX and after I have successfully deployed it as a web app in Azure, I cannot click/use any of the Telerik controls.

For example, I can't click the paging links in a radGrid, I can't click the dropdown list, etc.

 I have set all of the references to copy local = true.

 There seems to be something else required for Azure but not sure what. The site works 100% if deployed to a standard web server running IIS.

Can someone please assist.

Thank you.