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<body>
  <div id="container">
   <div id="title">DOM(Document Object Model) sample</div>
   <div id="titlesub">千年暦</div>
   <div id="valbox">
     <div id="m" class="ym">月</div>
     <div id="mmdatabox"><input id="MMM" type= "number" name="month" min="1" max="12" required ></div>
     <div id="y" class="ym">年</div>
     <div id="start">開始ボタン</div>
     <div id="yydatabox"><input id="YYY" type= "number" name="Year" min="1700" max="2700" required ></div>
   </div>
   <div id="target">
     <div id="dayagg"></div> 
     <div id="y06" class="liney"></div>
     <div id="y05" class="liney"></div>
     <div id="y04" class="liney"></div>
     <div id="y03" class="liney"></div>
     <div id="y02" class="liney"></div>
     <div id="y01" class="liney"></div>
     <div id="x07" class="linex"></div>
     <div id="x06" class="linex"></div>
     <div id="x05" class="linex"></div>
     <div id="x04" class="linex"></div>
     <div id="x03" class="linex"></div>
     <div id="x02" class="linex"></div>
     <div id="x01" class="linex"></div>
     <div id="Sunday" class="week">日</div>
     <div id="Monday" class="week">月</div>
     <div id="Tuesday" class="week">火</div>
     <div id="Wednesday" class="week">水</div>
     <div id="Thursday" class="week">木</div>
     <div id="Friday" class="week">金</div>
     <div id="Saturday" class="week">土</div>
   </div>
 </div>