function showfaq()
{ var a=document.getElementById('faq_frm').value;
  document.location="faq-"+a+".html";
}
function showsearch()
{ var a=document.getElementById('sort_d').value;
  document.location=document.location.pathname+"?sort="+a;
}
function showfiltr()
{ var a=document.getElementById('sort_s').value;
  //  alert ("пока не работает");
  //alert (document.location.pathname);

  document.location=document.location.pathname+"?filtr="+a;
}