wml页面间自动跳转

a.wml
<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml">

<wml>
<card id="card1" title="Card 1">
<p>
Hello World!
</p>
</card>
</wml>
b.wml
<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml">

<wml>
<card ontimer="a.wml">
<timer value="30"/>
<p>Hello World!</p>
</card>
</wml>

说明：运行b.wml文件3秒后自动跳转到a.wml