function open_new_documents_window(window_name, window_url, window_width, window_height) 
	{
		if (window_width > (screen.width-50)) window_width = screen.width-50;
		if (window_height > (screen.height-100)) window_height = screen.height-100;
		var pos_x=Math.round((screen.width-window_width)/2);
		var pos_y=Math.round((screen.height-window_height)/2);
		return open( window_url, window_name, "resizable=yes,scrollbars=yes, status=no,menubar=no,width=" + window_width + ",height=" + window_height + ",left="+pos_x+",top="+pos_y);
	}