Get a asp.net var in JS script

I've got a huge javascript file, so i don't like to include the wole script in my aspx file.
So i made a script file with external js.

But from the JS file i need to change something, like loadingtext, loadingtitle, creditstytle...
I like to get the var from my aspx.cs file.
The beginning of the javascript file:

 var hs = {
// Language strings
lang : {
 cssDirection: 'ltr',
 loadingText : 'Laden...',
 loadingTitle : 'Klik hier om te annuleren',
 focusTitle : 'Klik hier om het beter te bekijken',
 fullExpandTitle : 'Naar begin formaat (f)',
 creditsText : 'aaaaaaa',
 creditsTitle : 'Copyright aaa.nl',
 previousText : 'Volgende',
 nextText : 'Vorige',
 moveText : 'Verplaatsen',
 closeText : 'Sluiten',
 closeTitle : ' ...