function customerReview(num)
{
if(num == 1){document.getElementById('page1').style.display="block";document.getElementById('page2').style.display="none";document.getElementById('reviews1').className="active";document.getElementById('reviews2').className="";}
else{document.getElementById('page2').style.display="block";document.getElementById('page1').style.display="none";document.getElementById('reviews2').className="active";document.getElementById('reviews1').className="";}
}