Problem with a Javascript form

[Rabel]

Hello I am trying to apply a search to my site - using the html form code

<form style="margin-top: 0px; margin-bottom: 0px; width:300px;" name="SearchBoxForm" action="searchadv.aspx" method="GET" onSubmit="return SearchBoxForm_Validator(this)">
<span class="style1"><span class="style2">Search:</span>
<input name="SearchTerm" size="30" />
</span><img src="images/spacer.gif" width="4" height="4" />
<input name="submit" type="Image" align="middle" src="skins/Skin_10/images/go.gif" border="0" />
<input type="hidden" name="IsSubmit" value="true" />
</form>

I tried to use a code like this from breaking down the code above

on(release){
whattext = _root.searchtext.text
trace(whattext)
getURL("javascript:SearchBoxForm_Validator(whattext)","_self","GET")
}

But there is the onSubmit and the action in the form so I dont know how to pass it, I also tried this coding and changing the input on the flash file to SearchTerm

on(release){
getURL("searchadv.aspx","_self","POST")
}

That jumps to the page but does nothing with the search, like you would expect.

Any help is appreciated.
Thanks
Randy

[Rabel]

I was able to get it to work like this

on(release){
where="searchadv.aspx?SearchTerm="+_root.SearchTerm.text
getURL(where,"_self","POST")
}