How to call javascript and php methods from flash

Hello Friends,

How to call a javascript method from flash ?? am having a simple javascript code ie

<script type=“text/javascript”>
function helloWorld() {
alert(‘Hello World’);
}
</script>

Now how to call the method helloWorld() from flash ??

Similarly how to call a php method also ?? am having the php code as,

<html>
<body>

<?php
function writeName()
{
echo “PHP”;
}

echo "My name is ";
writeName();
?>

**</body>
</html> **

now i want to call writeName() from flash ?? how to achieve these things from flash ?

Wats the code i have to write in flash cs3 ??

Rajesh