Netscape

Hi to everyone,
i have made a botton in SVG, when you click on the botton I want to
open a new windows.
It works well in IE but not in Netscape.
the code looks like this:
<g>
<rect id="help" (...) onclick="apri_link()"/>
<text (..)onclick="apri_link()">HELP</text>
</g>

<script type="text/javascript"><![CDATA[
function apri_link(){
open(URL,'colors');
}
]]></script>