Is it possible to add custom javascript to the create (standard) object page

Question

While looking i found out i can overwrite parts of the case feeds page. Source: http://www.salesforce.com/us/developer/docs/case_feed_dev/case_feed_dev_guide.pdf

But is this also possible to change the create object page? I would like to add my custom javascript for the the textareas.

Answer 1

I found a topic that uses the sidebar to achieve this. source: End of javascript sidebar workarounds?

Worked like a charm.