$(document).ready(function() {
    (new Image()).src = "../images/bg_snav.png";
    (new Image()).src = "../images/navctl_on.gif";
    (new Image()).src = "../images/navctl.gif";
    (new Image()).src = "../images/navcbl.gif";
    var DropMenu = new Array();
    var DropBtn = new Array();
    var curNav = $("#nav>li.cur")
    $("#nav>li").each(function(i, item) {
        //if ($(item).find("ul").length <= 0) return;
        DropMenu[i] = $(item).find("ul");
        DropBtn[i] = $(item).find(">a");
        DropBtn[i][0].tid = i;
        if ($(item).find("ul").length > 0) {
            DropMenu[i][0].tid = i;
            DropBtn[i][0].subNav = DropMenu[i][0]
        }
        DropBtn[i][0].onmouseover = function() {
            var id = this.tid;
            curNav.removeClass("cur")
            DropBtn[id].parent().addClass("on");
            if (this.subNav) {
                clearTimeout(DropMenu[id][0].htimeout)
                DropMenu[id].show();
                DropMenu[id].dropShadow();
            }

        }
        DropBtn[i][0].onmouseout = function() {
            var id = this.tid;
            if (this.subNav) {
                clearTimeout(DropMenu[id][0].htimeout)
                DropMenu[id][0].htimeout = setTimeout(function() { hide(id) }, 10);
            } else {
                $(this).parent().removeClass("on");
                curNav.addClass("cur");
            }
        }
        if ($(item).find("ul").length > 0)
            DropMenu[i][0].onmouseover = function() {
                var id = this.tid;
                clearTimeout(DropMenu[id][0].htimeout)
            }
        if ($(item).find("ul").length > 0)
            DropMenu[i][0].onmouseout = function() {
                var id = this.tid;
                clearTimeout(DropMenu[id][0].htimeout)
                DropMenu[id][0].htimeout = setTimeout(function() { hide(id) }, 10);
            }
        });
    function hide(id) {
        clearTimeout(DropMenu[id][0].htimeout);
        DropMenu[id].removeShadow();
        DropMenu[id].hide();
        DropBtn[id].parent().removeClass("on");
        if ($("#nav li.on").length == 0)
            curNav.addClass("cur");
    }
});