w = null;
nw= null;

function OpenW( FileName,wd,ht ) {

	w = window.open( FileName, "", "menubar=no,toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=yes,width=" + wd + ",height=" + ht );

}

function NewW( FileName,wd,ht ) {

	if ( w==null ) {
		OpenW( FileName,wd,ht );
  }
  else {
		if ( navigator.appVersion.substring( 0, 1 )>2 ) {
			if ( w.closed==true ) {
				  OpenW( FileName,wd,ht );
			}
			else {
				w.location.replace(FileName);
				w.focus();
			}
		}
		else {
			w.close();
			OpenW( FileName,wd,ht );
		 }
	}
}

function CloseW() {
	if ( w != null ) {
		if ( navigator.appVersion.substring( 0, 1 )>2 ) {
			if ( w.closed==false ) {
				w.close();
			}
		}
		else {
			win.close();
		}
	}
}