// Comment javascript code library.
// Copyright 2005 Perception Studios, Inc.

function getQueryString(arg) {
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] == arg) {
      return pair[1];
    }
  } 
}