function $(id) {
    return document.getelementbyid(id);
}

function showmenu (baseid, divid) {
    baseid = $(baseid);
    divid  = $(divid);
    if (showmenu.timer) cleartimeout(showmenu.timer);
	hidecur();
    divid.style.display = 'block';
	showmenu.cur = divid;

    if (! divid.iscreate) {
        divid.iscreate = true;
        //divid.timer = 0;
        divid.onmouseover = function () {
            if (showmenu.timer) cleartimeout(showmenu.timer);
			hidecur();
            divid.style.display = 'block';
        };

        function hide () {
            showmenu.timer = settimeout(function () {divid.style.display = 'none';}, 1000);
        }

        divid.onmouseout = hide;
        baseid.onmouseout = hide;
    }
	function hidecur () {
		showmenu.cur && (showmenu.cur.style.display = 'none');
	}
}