QQ在线客服实现

登录网站：http:/is.qq.com/webpresence/code.shtml(自动跳转到:http://wp.qq.com/)

自动生成的代码如下：

<a href="http://sighttp.qq.com/cgi-bin/check?sigkey=e69ca5a5969b8668ccef79ab445ffe7b6e5afc09a0613db4e249406f6bfa1358"; target=_blank; onclick="var tempSrc='http://sighttp.qq.com/wpa.js?rantime='+Math.random()+'&sigkey=e69ca5a5969b8668ccef79ab445ffe7b6e5afc09a0613db4e249406f6bfa1358';var oldscript=document.getElementById('testJs');var newscript=document.createElement('script');newscript.setAttribute('type','text/javascript'); newscript.setAttribute('id', 'testJs');newscript.setAttribute('src',tempSrc);if(oldscript == null){document.body.appendChild(newscript);}else{oldscript.parentNode.replaceChild(newscript, oldscript);}return false;"><img border="0" SRC='http://wpa.qq.com/pa?p=1:715381776:41' alt=""></a>