Plugin problems

would someone who knows how to do these things be so kind as to have a look at the source on
http://mysite.iptic.com/mnme/realtime/index.html and work out why the change file button isnt working… Iv copied it as directly out of the publisher docs… but it dosnt seem to work

-Take off the “codebase …” line and write below where to find and install plug-in

Its the bit at the bottom that isnt working

<form>
<input type=“button” value = “load Rings”
onClick=“Blender3DPlugin.blenderURL=‘http://mysite.iptic.com/mnme/realtime/ring.blend’ ;”>
</form>

Iv tried various small modifications but to no avail…