Need help in opening .htm file in MVC

I am using MVC4 and Jquery.

I am having issue in opening the .htm file through action method in MVC.

Here is my Code:

   <img src="~/Images/question_frame.png" style="margin-top:3px;height:18px;width:20px;" onclick="window.open('@Url.Action("Help", "Home", new { id = "NMCHelp"})', 'NMCHelp', 'toolbar=no, scrollbars=yes, resizable=yes, top=50, left=50, width=750, height=600');" />

My ActionMethod:

[HttpGet]
        [Authorize]
        public ActionResult Help()
        {
           var result = new FilePathResult("~/help/nmc/enu/Default.htm", "text/html");
                return result;

               }

I am facing issue while trying to open.I am getting error like '$'is undefined.

Please let me know how can I open the .htm file through action method