How do i add an Onload event?
 

Or more specifically how do i add an Onload event just to a specific pages?

I need to add this to the body tag on the create profile page and one on the checkout, i am sure this can be done in smarty but have yet to figure it out.

I would very much appreciate any advice on how to achieve this.

Thanks

Here's a few that cover cart, registration, login, etc. Play around with them and see if they do what you need.