function reviews1(){
   if(document.getElementById("reviews1").style.display == "block"){
      document.getElementById("review1_link").innerText = "REN200の口コミを読む";
      document.getElementById("reviews1").style.display = "none";
   }else{
      document.getElementById("review1_link").innerText = "REN200の口コミを閉じる";
      document.getElementById("reviews1").style.display = "block";
   }
}

function reviews2(){
   if(document.getElementById("reviews2").style.display == "block"){
      document.getElementById("review2_link").innerText = "DoseRAE2(PRM1200)の口コミを読む";
      document.getElementById("reviews2").style.display = "none";
   }else{
      document.getElementById("review2_link").innerText = "DoseRAE2(PRM1200)の口コミを閉じる";
      document.getElementById("reviews2").style.display = "block";
   }
}

function reviews3(){
   if(document.getElementById("reviews3").style.display == "block"){
      document.getElementById("review3_link").innerText = "TERRA(MKS-05)の口コミを読む";
      document.getElementById("reviews3").style.display = "none";
   }else{
      document.getElementById("review3_link").innerText = "TERRA(MKS-05)の口コミを閉じる";
      document.getElementById("reviews3").style.display = "block";
   }
}