post variable to the parent flash window from the asp file

Hello, friends. Now I am doing flash and asp things. The asp page is opened by click one button on the flash page. And after choosing one image from asp page, I would like to post that image name to its parent flash page where a movie clip can receive it. I have my code as following, but seems the variable wasn't posted successfully. Any idea, plz help me. Thanks a lot!


gallery.asp

<%
dim galleryimage
galleryimage=Request("gallery")

%>
<form name="galleryform" method="post" action="gallery.asp">
<a href="flashpage.swf?gallery=<%=galleryimage%>"><input name="submit" type="submit" value="submit""></a>
<table width="78%" height="391" border="0">
<tr>
<td width="26%" height="196"><input name="gallery" type="radio" value="2"" width="150" height="176"><img src="2.jpg"></td>
<td>...
</td>
</tr>
</table>
</form>

In the flashpage, I have one the frame action:

_root.createEmptyMovieClip("gallery", 1);
_root.gallery.loadMovie(galleryimage+".jpg");


What is wrong with my code. Nothing shown on the gallery movie clip.