New to Kirupa and Flash.Need to convert this JS to AS

Friends,
we have purchased a template from template monster.
The header flash is having a text box and a button for the site search.
I want to add a site search script for the button click.
I mean, the user will enter the search text in the text box and click the search button.
then i want to write the below script (Note:here i have JavaScript i want this script to be converted to Action Script)

<script type="text/javascript">
var domainroot="www.mydomain.com"
function Gsitesearch(curobj){
curobj.q.value="site:"+domainroot+" "+curobj.qfront.value
}
</script>
 
<form action="http://www.google.com/search" method="get" onSubmit="Gsitesearch(this)">
<p>Site Search :<br />
<input name="q" type="hidden" />
<input name="qfront" type="text" style="width: 180px" /> <input type="submit" value="Search" /></p>
</form>

Currently i have written in flash file’s button click

on (release, keyPress "<Enter>") {
address = "http://www.google.com/search";
getURL(address);
}

but, the above one is just bringing the google search. i want, google to search my textbox.
what i have to write in the button release?

Thanks & Regards
Sathyguy