void mxExpressionTray::ReloadBitmaps( void )
{
	CExpClass *cl;
	int c = expressions->GetNumClasses();
	for ( int i = 0 ; i < c; i++ )
	{
		cl = expressions->GetClass( i );
		if ( !cl )
			continue;

		cl->ReloadBitmaps();
	}
	redraw();
}