function stripUrlParams(url, parameters){
  var urlparts = url.split('?');
  if(urlparts.length===1||urlparts[1]==="")
  {
    return url.replace(/(.+)(\?)$/, '$1');;
   }
      var pars = urlparts[1].split('&');
  var ob = {};
  pars = pars.reverse();
  for(el in pars) 
  {
    var val=pars[el].split("=");
    if(!parameters||parameters.indexOf(val[0])===-1)
    {ob[val[0]] = val[1]}
  };
  var newString = urlparts[0] + "?";
  for(el in ob) {
    newString+= el+"="+ob[el] + "&"
  }
  return newString.replace(/(.+)(\&)$/, '$1');
  
}