How to set the url in off-line site using jquery ajax

well my task is running a static site, No servers at all. pure HTML, and i need to load and read an XML file and update the page with the result.

The task is done and can read the xml file if the file is in the same location, the problem is if the xml file is in a separate folder the ajax flails. seems like the url fails.

$.ajax({
  type: "GET",

  // working url setting - case - 1
  // url: "somexmlfile.xml",

  // not working - case - 2
  url: "../somepath/somexmlfile.xml",

  dataType: "xml",
  success: function(xml){
    // do something with the returned data
  },
  error: function() {
    // display the error
  }
});

Case - 1 is the working solution for me, but i need to place the xml file in a separate place.

Then the case - 2 is the way to get to the file which is getting failed.

any idea,