function hidepage(pageid) {
  document.getElementById('pt' + pageid).style.display="none";
}

function showpage(pageid) {
  document.getElementById('pt' + pageid).style.display="block";
}

function ButtonVisibility(id) {
  if (id==1) {
    document.getElementById('prev').style.visibility="hidden";
  }
  else {
    document.getElementById('prev').style.visibility="visible";
  }
  if (id==pagecount) {
    document.getElementById('next').style.visibility="hidden";
  }
  if (id<pagecount) {
    document.getElementById('next').style.visibility="visible";
  }
  if (id<=qpagecount) {
    document.getElementById('backtofaq').style.visibility="hidden";
  }
  if (id>qpagecount) {
    document.getElementById('backtofaq').style.visibility="visible";
  }
}

function Prev() {
 if (currentpage>1) {
  hidepage(currentpage--);
  showpage(currentpage);
  ButtonVisibility(currentpage);
 }
}

function Questions(pagenumber) {
 //if (currentpage>1) {
 // hidepage(currentpage--);
 // showpage(currentpage);
 // ButtonVisibility(currentpage);
 //}
 GoToPage(pagenumber);
}


function Next() {
 if (currentpage<pagecount) {
  hidepage(currentpage++);
  showpage(currentpage);
  ButtonVisibility(currentpage);
 }
}

function GoToPage(pagenumber) {
 if (pagenumber!=currentpage) {
  hidepage(currentpage);
  currentpage = pagenumber;
  showpage(currentpage);
  ButtonVisibility(currentpage);
 }
}