cut 'n paste:
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
alert("<? echo $var; ?>");
// End -->
</SCRIPT>
</HEAD>
<BODY>
<CENTER>
<FORM action="<? echo $PHP_SELF; ?>">
<input type="test" value="<? echo $var; ?>" name="var">
<input type="submit" value ="submit" name="submit">
</FORM>
</CENTER>
</BODY>