java applet 签名和实例
http://www.blogjava.net/nokiaguy/archive/2009/02/06/253636.html

var result=false;     var appletforward = document.getElementById('forwardport');  setTimeout(function() {   try{//其中portForward是applet java代码中提供的一个方法result=appletforward.portForward();}catch(ex){alert(ex);  }  }, 100000);