document.write('<div class=\"sidebar\"><a id=\"copytext\" data-clipboard-action=\"copy\" data-clipboard-target=\"#docopy\" class=\"fuzhi\"><span>一键复制</span></a><a class=\"sidedown dl-link\"   href=\"javascript:;\" id=\"vipdown\"  onclick=\"showpay(2)\"><span>下载文档</span></a><a href=\"javascript:;\" class=\"gf_tousu\" onclick=\"showkf()\"><span>联系客服</span></a><a id=\"leftButton\" class=\"fuzhi\" onclick="add()"><span>A+</span></a><a id=\"rightButton\" class=\"fuzhi\" onclick="cut()"><span>A-</span></a></div><div class="d_alert marks" price="0.5"  redodown="1"  myuserid="0" token="b450c79ed5" iscopy="0"classid="165"  copyid="docopy" userid="56" payurl="/" sign="71a6dec02a" ddno1="uezo" ispc="pc" id="21682"  showid="" vip="newstext"  num="0" dotype="2"><div class="copy-alert alert-bounceIn"><div class="claos closepay"></div><div class="paybox paybox1"><div class="payitem payitem1 item-active" isone="0" gmoney="0.5" ><span class="hot"></span><div class="paybox-title">直接下载</div><div class="paybox-img" style="margin-top:15px;"><img src="/skin/fword/images/paper_one.png"></div><div class="paybox-art">单次下载</div><div class="paybox-money"><strong>0.5元/次</strong></div><div class="paybottom"><div class="paybox-bottom paylogin2" onclick="showcode(1)">微信支付</div></div></div></div><div class="paybox paybox1"><div class="payitem1" ><div class="paybox-title">免费下载</div><div class="pic"><img src="http://www.kebenku.com/skin/kebenku/images/weixin_kbk.jpg"></div><div class="help help1">公众号：<span id="mygzh">课本库网</span><span id="mycopy" data-clipboard-action="copy" data-clipboard-target="#mygzh">复制</span></div><div class="help">复制微信公众，搜索即可关注！</div><div class="check"><div class="checkbox"><input type="hidden"name="classid"value="165" freeuser="aa5764e5e17cb90709fc3cb003e6df72"><input type="hidden"name="id" value="21682"><input type="hidden"name="dotype"value="2"><input type="hidden"name="showid" id="showid" value=""><input type="hidden"name="vip"value="newstext"><input placeholder="请在这里输入验证码" type="tel"id="vcode"class="vcode"name="code"maxlength="4"><input type="submit"class="mf-down mf-down-button"value="提交"></div><div class="check_error">关注微信公众号获取验证码</div></div></div></div><div class="xiazai"><div class="xiazai-box"><a href="javascript:;" onclick="showkf()"  class="redown">联系客服</a><a href="javascript:;"  class="redown" onclick="ajaxlogin();">立即登录</a><a href="javascript:;"   class="redown" onclick="showkf()">忘记账号</a></div></div></div></div><div class="pay_mask marks"><div class="mask_box"><div class="pay_mask_top">欢迎使用微信支付</div><div class="pay_qrcode"><img class="paycode" src=""></div><div class="pay_tip"><img src="/skin/fword/images/sys.png"alt="">扫一扫支付</div><div class="pay_price">金额：<span class="paymoney"></span></div><div class="claos closecode" ></div></div></div><div class="customer_mask mask"><div class="customer_service_box"><div class="cj_title"><span>常见问题</span></div><ul><li><div class="que">1、支付成功后，为何无法复制/下载</div><div class="ans">付费后复制不了，请核对下微信账单信息，确保付费成功；已付费成功了还是复制不了<br/>VIP会员登陆即可:<a href="javascript:;" onclick="AjaxLog()">点击这里</a><br/></div></li><li><div class="que">2、忘记账号和密码的解决办法</div><div class="ans">忘记账号请：<a href="javascript:;" onclick="showfaq()">点击这里</a><br/>忘记密码请：<a href="http://wpa.qq.com/msgrd?v=3&amp;uin=413224887&amp;site=qq&amp;menu=yes" target="_blank">点击这里</a></div></li><li><div class="que">3、如何联系客服</div><div class="ans">如果以上无法解决您的问题请：<a href="http://wpa.qq.com/msgrd?v=3&amp;uin=413224887&amp;site=qq&amp;menu=yes" target="_blank">站长QQ</a><br/>微信客服：413224887</div></li></ul><div class="member"><script src="/e/member/AjaxLog/loginjs2.php"></script></div><div class="claos closekf" ></div></div></div><div class="down_mask mask" ><div class="down_service_box"><div class="close" data-alert="customer_mask"></div><div class="cj_title"><span>下载中心</span></div><div class="down_body"><p>您的账号注册成功！密码为：123456，当前为默认信息，请及时修改</p><p><a href="" class="down">下载文件</a><a href="">立即修改</a></p></div><div class="claos closedown"></div></div></div><div class="faq_mask mask"><div class="faq_service_box" ><div class="close"data-alert="customer_mask"></div><div class="cj_title"><span>帮助中心</span></div><div class="faq_get"><p><input class="orderid" type="text" size="30" placeholder="请在这里订单号"></p><p><a class="getuser" href="javascript:;" onclick="getusername()">找回用户名</a></p></div><div class="faq-show"></div><div class="faq-tishi"><p><b>如何获取自己的订单号？</b></p><p>打开微信，找到微信支付，找到自己的订单，就能看到自己的交易订单号了。</p><p><img src="/skin/fword/images/faq.jpg"></p></div><div class="claos closefaq" ></div></div></div>');
 <!-- 新增自定义样式开始（未登录状态） -->
var d = document.getElementById('downdoc');
d.innerHTML = d.innerHTML + '<a class=\"dow_btn\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(2)\"><em></em>下载文档</a>';

var d = document.getElementById('downdoc1');
d.innerHTML = d.innerHTML + '<a class=\"download_word download_word_lb\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(2)\"><div class=\"download_card\"><div class=\"card_nr card_nr_lb\"><h4 class=\"card_bt\">切线的判定和性质</h4><div class=\"download_card_msg\">复习、发现问题    1.直线与圆的三种位置关系    在图中,图(1)、图(2)、图(3)中的直线l和⊙O是什么关系?    2、观察、提出问题、分析发现(教师引导)    图(2)中直线l是⊙O的切线,怎样判定?根据切线的定义可以判定一条直线是不是圆的切线,但有时使用定义判定很不方便.我们从另一个侧面去观察,那就是直线和圆的位置怎样时,直线也是圆的切线呢?    如图,直线l到圆心O的距离OA等于圆O的半径,直线l是⊙O的切线.这时我们来观察直线l与⊙O的位置.    发现:(1)直线l经过半径OC的。下面小编给大家分享切线的判定和性质，希望能帮助到大家。 切线的判定和性质文档下载网址链接：</div></div><div class=\"download_card_btn download_card_btn_lb\"><div class=\"content_box_tj\"><span>推荐度：</span><img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\"></div><div class=\"downlod_btn_right demo_tc downlod_btn_right_lb\"><em class=\"downlod_icon\"></em>点击下载文档<span>文档为doc格式</span></div> </div></div></a>';
<!-- 新增自定义样式结束（未登录状态） -->