Jquery :: Running Functions From External JS File?

I have a lot of things that are running on the $document.ready() area and was wondering if I can put them all into an external js file and call 1 function from the $(document).ready() call

here is what I have

Code:

<script type='text/javascript'>
$(document).ready(function(){
$(".editphrase").editable('index.php?m=language&a=changephrase', {

[code]....

I would just like to call 1 function from the $(document).ready() call that lies in an external .js file that will process the code above so I don't have so much clutter in the page. This is what I would like. I have tried it but it doesn't work.

Code:

$(document).ready(function(){
cms_init();
});