level - integer number that specifies how and when to
perform the refresh operation:
0 - normal refresh (like the refresh button in IE)
1 - refresh if the page is expired (usually if the page has been
loaded long ago and is still opened in the viewer)
3 - Hard refresh (equivalent to Ctrl-F5 in IE).
Remarks
Standard DHTML provides methods for page reload but using them
there is no way to invoke hard refresh. In such case this method can
be used. As ALP applications are local it will be useful mostly in
applications that mix internet with local content and need to
refresh some of the frames that show online pages.
