managing document.ready event(s) on a large-scale website

This is what i have done in my rails mvc project with heavy javascript, i have created a separate namespace for the controllers in js which resembles the rails controller

class BusinessController
   def new
   end  
   def index
   end
end

and

Var Business =  {
      init : function(action) {
         //code common to the Business module
         //even add the common jquery doc ready here, its clean
         //and call the page specific action
         this[action]();
      },
      new : function() {
             // check jquery document ready code here, thats relevant to this action
             //New rental page specific code here
      },
      index : function() {
             //  check jquery document ready code here, thats relevant to this action
             //index rental page specific code here 
      }
}

and on the view code(server side) just initiate the page specific js code by

<script type="text/javascript"> 
 <%= controller_name %>.init('<%= controller.action_name %>'); 
//which will render to
//  Business.init(index);
</script>

You can pretty much tweak this to make it work in any language. And this approach doesn’t care whether you have a single file or multiple files.