document.write("<div class='user_info'>用户名：<input type='text' name='username' id='username'  class='two_input' />&nbsp;密 码：<input type='password' name='password'  id='password' class='two_input' />&nbsp;验证码：<input type='text' name='key' class='third_input' /><img src='/e/ShowKey/?v=pl' align='absmiddle' /><input name='nomember' type='checkbox' id='nomember' value='1' />匿名</div>");