// JavaScript Document

function showimg1(){
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  document.getElementById("linkArea").href = "http://www.rinkaiseminar.co.jp/sokuhou.html";
}

function showimg2(){
  document.imgLink.src = "images/JavaScript/JS-content2.jpg";
  document.getElementById("linkArea").href = "http://www.rinkaiseminar.co.jp/topics/contents/040101030.html";
}

function showimg3(){
  document.imgLink.src = "images/JavaScript/JS-content3.jpg";
  document.getElementById("linkArea").href = "topics/contents/084111210.html";
}