document.open();
document.write('<div id="size">');
document.write('<p>');
document.write('<span class="text_size">文字の大きさ</span>');
document.write('<span class="sizeL" id="large"><a herf="#">大</a></span>');
document.write('<span class="sizeM" id="medium"><a herf="#">中</a></span>');
document.write('<span class="sizeS" id="small"><a herf="#">小</a></span>');
document.write('</p>');
document.write('</div>');
document.close();