I am not able to get response as json. pls help me out

hi, i created one wep api crud operation using MVC.  i followed this following link to create that web api. kindly go through this link for clear.

http://www.dotnetchunks.com/Article/MVC%204%20WEB%20API%20_NET%204_5/13#.UjKapManqul

I got the GET response also. but i am getting xml response. instead  i needed json response. so in that article they told to put following javascript to get JSON response but they did not mention where to put the following javascript. so blindly i put the javascript in index.cshtml<--views<---HOME(which is in solution explorer in project). because this folder only has design form. so still i am getting xml response. if i remove the javascript also, it response xml format. so, i think the javascript is not invoked or i do not know where to put the javascript correctly. so, please help from this problem. thanks a lot.

javascript file:

output file.