<!--
           var num = 4; //表示させるバナーの数
           var rand = Math.floor((Math.random() * num));
           var output = "";
    switch(rand)
    {
  case 0: //バナー1
     output = '<a href="2nd.html"><img src="images/index/index_banner_2nd.jpg" width="950" height="400" border="0"></a>';
               break;    
  case 1: //バナー2
     output = '<a href="stay.html"><img src="images/index/index_banner_stay.jpg" width="950" height="400" border="0"></a>';
               break;    
  case 2: //バナー3
     output = '<a href="commute.html"><img src="images/index/index_banner_commute.jpg" width="950" height="400" border="0"></a>';
               break;    
  case 3: //バナー4
     output = '<a href="http://info.sekiyads.co.jp/?eid=1251040" target="_blank"><img src="images/index/index_banner_goukaku.jpg" width="950" height="400" border="0"></a>';
               break; 
  default : //バナー
     output = '<a href="stay.html"><img src="images/index/index_banner_stay.jpg" width="950" height="400" border="0"></a>';
               break;
    }
    document.write(output);
//-->
