function showtab(a) { var mainChildren = document.querySelector(".mainpadd").children; if(a==1) { for (i=1; i<mainChildren.length; i++) { mainChildren[i].style.display="none"; } document.getElementById("container2").style.display="block"; document.getElementById("container3").style.display="none";} else if(a==2) { for (i=1; i<mainChildren.length; i++) {mainChildren[i].style.display="block";}document.getElementById("container2").style.display="none"; document.getElementById("container3").style.display="none";} else {for (i=1; i<mainChildren.length; i++) { mainChildren[i].style.display="none"; } document.getElementById("container2").style.display="none"; document.getElementById("container3").style.display="block";}}document.write("<ul>");document.write("<li><a target=\"_blank\" href=\"http://news.znds.com/article/61406.html\">电视淘宝双11覆盖家庭大屏数达到1.2亿</a></li>");document.write("<li><a target=\"_blank\" href=\"http://news.znds.com/article/59533.html\">淘宝官方上线“比价”功能 暂不支持电视淘宝</a></li>");document.write("<li><a target=\"_blank\" href=\"http://news.znds.com/article/51110.html\">电视淘宝怎么安装</a></li>");document.write("<li><a target=\"_blank\" href=\"http://news.znds.com/article/50766.html\">电视淘宝可以看直播吗</a></li>");document.write("<li><a target=\"_blank\" href=\"http://news.znds.com/article/49910.html\">双十一哪里买东西最便宜？电视淘宝红包不停还有独家下单返利</a></li>");document.write("<li><a target=\"_blank\" href=\"http://news.znds.com/article/45771.html\">618电视淘宝优惠攻略来了！手把手教你618怎么薅羊毛！</a></li>");document.write("</ul>");document.getElementById("necessary_tab").innerHTML='<li class="nownav" id="tab3" onmouseover="showtab(3)" style="border-right: 1px solid; padding-right: 16px;"><h2>相关推荐</h2></li><li class="nownav active" id="tab2" onmouseover="showtab(1);" style="border-right: 1px solid; padding-right: 16px;"><h2>相关资讯</h2></li><li class="nownav" id="tab1" onmouseover="showtab(2)"><h2>电视淘宝历史版本</h2></li>';showtab(3);