When an application is deployed it will extract Dojo which is only used for the calendar. This causes extreme delays, at least on slower Windows systems. Perhaps use the google hosted Dojo but then you always need internet connection.

Submitted by Danny Groenewegen on 11 February 2010 at 15:12

Use the eclipse-build-code-only ant command (drag build.xml to Ant view) to only build the WebDSL code but not copy the project resources to the deployed directory. eclipse-build is the task for a full build, which is the default target for ‘Build project’.

Perhaps an option is to create a dojo layer containing the things you need… this way dojo is compressed to a single .js file containing everything

See: http://docs.dojocampus.org/build/index

That only leaves the css, but the css for the datepicker should be easily extractable

switched to JQuery datepicker