function setTabBg(x){
  document.getElementById(x).src='images/tab_'+x+'_dn.png';
}

function resetTabBg(x){
  document.getElementById(x).src='images/tab_'+x+'.png';
}

function show_rp_testimonials(){
  //set tab
  document.getElementById('rp_testimonials').src='images/tab_rp_testimonials_dn.png';
  document.getElementById('rp_faqs').src='images/tab_rp_faqs.png';
  document.getElementById('rp_testimonials').blur();
  //set panel
  document.getElementById('rp_box_testimonials').style.visibility='visible';
  document.getElementById('rp_box_faqs').style.visibility='hidden';
}

function show_rp_faqs(){
  //set tab
  document.getElementById('rp_faqs').src='images/tab_rp_faqs_dn.png';
  document.getElementById('rp_testimonials').src='images/tab_rp_testimonials.png';
  document.getElementById('rp_faqs').blur();
  //set panel
  document.getElementById('rp_box_faqs').style.visibility='visible';
  document.getElementById('rp_box_testimonials').style.visibility='hidden';
}