<p><pre><code>  &gt; Google Chrome and Internet Explorer both also support this API. Chrome uses
  &gt; the same restriction as Firefox (that it must be run in a user-initiated
  &gt; callback). Internet Explorer allows it to be called at any time, except it
  &gt; first prompts the user with a dialog, asking for permission to access the
  &gt; clipboard.
</code></pre>
Seems like IE does what you want.