// Change Size
var isStyle = (document.getElementById) ? 1 : 0;

function changefont( path ){
   if(isStyle) {
      var FSS_ON  = new Image();  FSS_ON.src = path + 'common/images/base/bt_fontsize_s.gif';
      document.writeln('<div id="fontChanger">');
      document.writeln('文字の大きさ ： ');
      document.writeln('<span><img src="' + path + 'common/images/base/bt_fontsize_s.gif" width="17" height="17" alt="小" onclick="ChFS(1,\'' + path +'\')" id="FS_S"></span>');
      document.writeln('<span><img src="' + path + 'common/images/base/bt_fontsize_m.gif" width="17" height="17" alt="中" onclick="ChFS(2,\'' + path +'\')" id="FS_M"></span>');
      document.writeln('<span><img src="' + path + 'common/images/base/bt_fontsize_l.gif" width="17" height="17" alt="大" onclick="ChFS(3,\'' + path +'\')" id="FS_L"></span>');
      document.writeln('</div>');
      var C = getCookie("fontsize");
      ChFS(Number(C), path);
   }
}

function ChFS( size, path ){
   switch( size ){
      case 1:
         document.getElementById("main_contents").style.fontSize   = '85%';
         document.images.FS_S.src =  path + 'common/images/base/bt_fontsize_s_here.gif';
         document.images.FS_M.src =  path + 'common/images/base/bt_fontsize_m.gif';
         document.images.FS_L.src =  path + 'common/images/base/bt_fontsize_l.gif';
         document.cookie = 'fontsize=1; path=/; expires=Tue, 31-Dec-2030 23:59:59; ';
         break;
      case 2:
         document.getElementById("main_contents").style.fontSize   = '92%';
         document.images.FS_S.src =  path + 'common/images/base/bt_fontsize_s.gif';
         document.images.FS_M.src =  path + 'common/images/base/bt_fontsize_m_here.gif';
         document.images.FS_L.src =  path + 'common/images/base/bt_fontsize_l.gif';
         document.cookie = 'fontsize=2; path=/; expires=Tue, 31-Dec-2030 23:59:59; ';
         break;
      case 3:
         document.getElementById("main_contents").style.fontSize   = '114%';
         document.images.FS_S.src =  path + 'common/images/base/bt_fontsize_s.gif';
         document.images.FS_M.src =  path + 'common/images/base/bt_fontsize_m.gif';
         document.images.FS_L.src =  path + 'common/images/base/bt_fontsize_l_here.gif';
         document.cookie = 'fontsize=3; path=/; expires=Tue, 31-Dec-2030 23:59:59; ';
         break;
      default:
         document.getElementById("main_contents").style.fontSize   = '92%';
         document.images.FS_S.src =  path + 'common/images/base/bt_fontsize_s.gif'
         document.images.FS_M.src =  path + 'common/images/base/bt_fontsize_m_here.gif'
         document.images.FS_L.src =  path + 'common/images/base/bt_fontsize_l.gif'
         document.cookie = 'fontsize=2; path=/; expires=Tue, 31-Dec-2030 23:59:59; ';
         break;
   }
}function getCookie(key,  tmp1, tmp2, xx1, xx2, xx3) {
    tmp1 = " " + document.cookie + ";";
    xx1 = xx2 = 0;
    len = tmp1.length;
    while (xx1 < len) {
        xx2 = tmp1.indexOf(";", xx1);
        tmp2 = tmp1.substring(xx1 + 1, xx2);
        xx3 = tmp2.indexOf("=");
        if (tmp2.substring(0, xx3) == key) {
            return(unescape(tmp2.substring(xx3 + 1, xx2 - xx1 - 1)));
        }
        xx1 = xx2 + 1;
    }
    return("");
}