Action with multiple parameters

Hello all!

I would like to delete multiple records on a single call. Something
similar to the following line.

new Ajax.Request('/myctrl/delete/1,2,3,4,5', {asynchronous:true,

However, I don't know how to pass multiple parameters to one action
(in a AJAX call). Is it possible? How could I do that?

In other words, I want the Delete action to take multiple parameters.
Something like that : controller/action/1,2,3,4,5.

Thank you for your help!