document.write('<form name="form1" method="post" action="/index.php?case=ballot&act=index">');
document.write('<input type="hidden" name="bid" id="bid" value="1" />');
document.write('<h5>');
document.write('网站为什么要改版？</h5>');
        document.write('<input type="submit" name="submit" id="button" value="投票" /></form>');