How to add context-dependent content to the view's output?

I have a view that displays (let's say) a grid (gallery) of pictures related to a given node X. This view has a parameter that's passed through the URL: http://mysite/node/$arg1/pictures. It works fine but I would like to be able to make a few changes to the output:

1) Change the title so that it says something like "Node X pictures", where Node X is the title of the node with ID that's passed through the parameter $arg1.

2) Add a link at the somewhere on the page that says "Start a slideshow". I have the slideshow view ready. Let's say it's URL is http://mysite/node/$arg1/slideshow

3) Add a link to page that will say "Add a new picture to node X". Again I have the URL for the picture-creation page http://mysite/node/$arg1/add_picture and

(2) and (3) are basically the same: I need to add a link and dynamically construct the URL passing the same parameter that's passed to the current view.

The final result should look something like this:

Node X pictures

Start a slideshow (link dependent on the $arg1)

Add a new picture (link dependent on the $arg1)

What is the best way of dynamically using the parameters' values to modify the view output based on that?

Thanks for your help!