Get the first part of a url path

If I have a url like:

http://localhost:53830/Organisations/1216/View

I want to alert the first part of the url path in lowercase format e.g. 'organisations'

So far I have:

var first = $(location).attr('pathname');

first.indexOf(1);

first.replace('/', '');

first.toLowerCase();

alert(first);

but it's not working as intended. Can anyone help? Thanks