/*
------------------------------------------------------------------------
TABS SCRIPT
------------------------------------------------------------------------
 
*/

var menuscript = {
    disabletablinks: false, ////Disable hyperlinks in 1st level tabs with sub contents (true or false)?
    currentpageurl: window.location.href.replace("http://" + window.location.hostname, "").replace(/^\//, ""), //get current page url 

    definemenu: function (tabid, dselected) {
        this[tabid + "-menuitems"] = null
        this.addEvent(window, function () { menuscript.init(tabid, dselected) }, "load")
    },

    showsubmenu: function (tabid, targetitem) {
        var menuitems = this[tabid + "-menuitems"]
        for (i = 0; i < menuitems.length; i++) {
            menuitems[i].className = ""
            if (typeof menuitems[i].hasSubContent != "undefined")
                document.getElementById(menuitems[i].getAttribute("rel")).style.display = "none"
        }
        targetitem.className = "current"
        if (typeof targetitem.hasSubContent != "undefined")
            document.getElementById(targetitem.getAttribute("rel")).style.display = "block"
    },

    isSelected: function (menuurl) {
        var menuurl = menuurl.replace("http://" + menuurl.hostname, "").replace(/^\//, "")
        return (menuscript.currentpageurl == menuurl)
    },

    addEvent: function (target, functionref, tasktype) { //assign a function to execute to an event handler (ie: onunload)
        var tasktype = (window.addEventListener) ? tasktype : "on" + tasktype
        if (target.addEventListener)
            target.addEventListener(tasktype, functionref, false)
        else if (target.attachEvent)
            target.attachEvent(tasktype, functionref)
    },

    init: function (tabid, dselected) {
        var menuitems = document.getElementById(tabid).getElementsByTagName("a")
        this[tabid + "-menuitems"] = menuitems
        for (var x = 0; x < menuitems.length; x++) {
            if (menuitems[x].getAttribute("rel")) {
                this[tabid + "-menuitems"][x].hasSubContent = true
                if (menuscript.disabletablinks)
                    menuitems[x].onclick = function () { return false }
            }
            else //for items without a submenu, add onMouseout effect
                menuitems[x].onmouseout = function () { this.className = "" }
            menuitems[x].onmouseover = function () { menuscript.showsubmenu(tabid, this) }
            if (dselected == "auto" && typeof setalready == "undefined" && this.isSelected(menuitems[x].href)) {
                menuscript.showsubmenu(tabid, menuitems[x])
                var setalready = true
            }
            else if (parseInt(dselected) == x)
                menuscript.showsubmenu(tabid, menuitems[x])
        }
    }
}