Jquery won't fire after postback

I have a jquery where we are trying to track what documents our users are viewing in our Document Library.  Users can upload a document and there is a pagination widget as well.

This is the jquery

$(document).ready(function(){  //
  $(".FileCabinet a").click(function () {
                    //$(document).on("click", "a", function() {
       
  if (! $(this).attr("href") ) {
     
     return;
  }
  else {  
      var href = $(this).attr("href");
      var mystring = href.replace(/.*\?/,'');  //remove everything before the ?
      var mystring1 = mystring.replace(/\&.*/,''); //remove the hash key
      var mystring2 = mystring1.replace(/[^\d\.]/g, ''); // remove non-numerics
  }  
   
alert(href);
   
  $.ajax({
    type: "POST",
    url: "/CMSPages/WebService.asmx/WhoClicked",
    data: JSON.stringify({ DocumentID: mystring2}),
    contentType: "application/json",
    success: function (data) {
      // Do something on sucess
    },
   
    error: function(jqXHR, status, errorThrown) {
      // Do something on failure
    }
  });
 
  });
 
  });
 
Whenever there is a partial postback, the jquery does not fire anymore.  I am assuming it has something to do with the document ready function.  Is there a workaround for this.  In other words how do I make this script fire on each time a document link is clicked.