//Drop Down Tabs Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Created: May 16th, 07'

var browserName = navigator.appName;
var is_chrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
var is_safari = navigator.userAgent.toLowerCase().indexOf('safari') > -1;
var index_safari = navigator.userAgent.toLowerCase().indexOf('safari');
var browserVersion = navigator.appVersion;

var tabdropdown = {
    disappeardelay: 200, //set delay in miliseconds before menu disappears onmouseout
    disablemenuclick: false, //when user clicks on a menu item with a drop down menu, disable menu item's link?
    enableiframeshim: 1, //1 or 0, for true or false

    //No need to edit beyond here////////////////////////
    dropmenuobj: null, ie: document.all, firefox: document.getElementById && !document.all, previousmenuitem: null,
    currentpageurl: window.location.href.replace("http://" + window.location.hostname, "").replace(/^\//, ""), //get current page url (minus hostname, ie: http://www.dynamicdrive.com/)

    getposOffset: function (what, offsettype) {
        var totaloffset = (offsettype == "left") ? what.offsetLeft : what.offsetTop;
        var parentEl = what.offsetParent;
        while (parentEl != null) {
            totaloffset = (offsettype == "left") ? totaloffset + parentEl.offsetLeft : totaloffset + parentEl.offsetTop;
            parentEl = parentEl.offsetParent;
        }
        return totaloffset;
    },

    showhide: function (obj, e, obj2) { //obj refers to drop down menu, obj2 refers to tab menu item mouse is currently over
        if (this.ie || this.firefox) {
            this.dropmenuobj.style.left = this.dropmenuobj.style.top = "-500px"
            //alert(this.dropmenuobj.style.left);
            //alert(this.dropmenuobj.style.top);
        }
        if (e.type == "click" && obj.visibility == hidden || e.type == "mouseover") {
            if (obj2.parentNode.className.indexOf("default") == -1) //if tab isn't a default selected one
                obj2.parentNode.className = "selectedNew"
            obj.visibility = "visible"
        }
        else if (e.type == "click")
            obj.visibility = "hidden"
    },

    iecompattest: function () {
        return (document.compatMode && document.compatMode != "BackCompat") ? document.documentElement : document.body
    },

    clearbrowseredge: function (obj, whichedge) {
        var edgeoffset = 0
        if (whichedge == "rightedge") {
            //alert("this.ie-" + this.ie + "&window.opera-" + window.opera); //IE= object html collection & undefined | FF= undefined&undefined
            //alert("this.standardbody.scrollLeft-" + this.standardbody.scrollLeft + "&this.standardbody.clientWidth-" + this.standardbody.clientWidth); //IE=0&1419 | FF=0&1349
            //alert("window.pageXOffset-" + window.pageXOffset + "&window.innerWidth-" + window.innerWidth); //IE= undefined&undefined | FF=0&1366
            var windowedge = this.ie && !window.opera ? this.standardbody.scrollLeft + this.standardbody.clientWidth - 15 : window.pageXOffset + window.innerWidth - 15
            //alert(windowedge); //IE=1404 | FF=1351
            //alert(this.dropmenuobj.offsetWidth); //IE=FF=134 | 135 = this.dropmenuobj.contentmeasure
            //alert(this.dropmenuobj.x); //IE= 478 | 615 | FF= 426 | 562
            this.dropmenuobj.contentmeasure = this.dropmenuobj.offsetWidth
            // IE = 1404 - 478|615 = 926|789 < 134|135 => edgeoffset = 134/135 - 134/135 = 0
            // FF = 1351 - 426|562 = 925|789 < 134|135 => edgeoffset = 134/135 - 134/135 = 0
            if (windowedge - this.dropmenuobj.x < this.dropmenuobj.contentmeasure)  //move menu to the left?
                edgeoffset = this.dropmenuobj.contentmeasure - obj.offsetWidth
        }
        else {
            var topedge = this.ie && !window.opera ? this.standardbody.scrollTop : window.pageYOffset
            var windowedge = this.ie && !window.opera ? this.standardbody.scrollTop + this.standardbody.clientHeight - 15 : window.pageYOffset + window.innerHeight - 18
            this.dropmenuobj.contentmeasure = this.dropmenuobj.offsetHeight
            if (windowedge - this.dropmenuobj.y < this.dropmenuobj.contentmeasure) { //move up?
                edgeoffset = this.dropmenuobj.contentmeasure + obj.offsetHeight
                if ((this.dropmenuobj.y - topedge) < this.dropmenuobj.contentmeasure) //up no good either?
                    edgeoffset = this.dropmenuobj.y + obj.offsetHeight - topedge
            }
            this.dropmenuobj.firstlink.style.borderTopWidth = (edgeoffset == 0) ? 0 : "1px" //Add 1px top border to menu if dropping up
        }
        return edgeoffset
    },

    dropit: function (obj, e, dropmenuID) {
        if (this.dropmenuobj != null) { //hide previous menu
            this.dropmenuobj.style.visibility = "hidden" //hide menu
            if (this.previousmenuitem != null && this.previousmenuitem != obj) {
                if (this.previousmenuitem.parentNode.className.indexOf("default") == -1) //If the tab isn't a default selected one
                    this.previousmenuitem.parentNode.className = ""
            }
        }
        this.clearhidemenu()
        if (this.ie || this.firefox) {
            obj.onmouseout = function () { tabdropdown.delayhidemenu(obj) }
            obj.onclick = function () { return !tabdropdown.disablemenuclick } //disable main menu item link onclick?
            this.dropmenuobj = document.getElementById(dropmenuID)
            this.dropmenuobj.onmouseover = function () { tabdropdown.clearhidemenu() }
            this.dropmenuobj.onmouseout = function (e) { tabdropdown.dynamichide(e, obj) }
            this.dropmenuobj.onclick = function () { tabdropdown.delayhidemenu(obj) }
            this.showhide(this.dropmenuobj.style, e, obj)
            this.dropmenuobj.x = this.getposOffset(obj, "left")
            this.dropmenuobj.y = this.getposOffset(obj, "top")
            //alert(this.dropmenuobj.x); //478 | 615
            //alert(this.dropmenuobj.y); //477 | 477
            //alert(this.clearbrowseredge(obj, "rightedge")); //0
            //this.dropmenuobj.style.left = this.dropmenuobj.x - this.clearbrowseredge(obj, "rightedge") + "px" // actual
            //this.dropmenuobj.style.left = this.dropmenuobj.x - 248 + "px"

            //this.dropmenuobj.style.left = "230px" // 478 - 248 = 230
            //this.dropmenuobj.style.left = "368px" // 478- 368 = 110
            //this.dropmenuobj.style.top = this.dropmenuobj.y - this.clearbrowseredge(obj, "bottomedge") + obj.offsetHeight + 1 + "px" // actual
            //this.dropmenuobj.style.top = this.dropmenuobj.y - 151 + "px"

            //this.dropmenuobj.style.top = "326px"  // 477 - 151 = 326; 151 - 26 -1 = 124
            //alert(obj.offsetHeight); //26

            if (browserName == "Netscape") {
                if (is_chrome == false && is_safari == true) {
                    // Safari
                    //alert("Browser: Safari ");
                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 212 + "px"

                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 213 + "px"  
                    //this.dropmenuobj.style.top = this.dropmenuobj.y - 145 + "px"                  

                    if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu1_e1")
                        this.dropmenuobj.style.left = 212 + "px"
                    else if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu2_e2")
                        this.dropmenuobj.style.left = 348 + "px"
                    this.dropmenuobj.style.top = this.dropmenuobj.y - 145 + "px"
                }
                else if (is_chrome == false && is_safari == false) {
                    // Firefox
                    //alert("Browser: Firefox ");
                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 228 + "px"
                    //this.dropmenuobj.style.top = this.dropmenuobj.y - 141 + "px"
                    //alert("this.dropmenuobj.x=" + this.dropmenuobj.x + "this.dropmenuobj.y" + this.dropmenuobj.y) // 426, 474 | 526,474
                    //this.dropmenuobj.style.left = "212px"
                    //this.dropmenuobj.style.left = "348px"
                    //this.dropmenuobj.style.top = "329px"
                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 214 + "px"

                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 215 + "px" // right
                    //alert(this.dropmenuobj.getAttribute("name"));
                    //this.dropmenuobj.style.left = 211 + "px"
                    //this.dropmenuobj.style.top = this.dropmenuobj.y - 145 + "px"

                    if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu1_e1")
                        this.dropmenuobj.style.left = 212 + "px"
                    else if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu2_e2")
                        this.dropmenuobj.style.left = 348 + "px"
                    this.dropmenuobj.style.top = this.dropmenuobj.y - 145 + "px"
                }
                else {
                    // Chrome
                    //alert("Browser: Chrome ");
                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 211 + "px"

                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 212 + "px"
                    //this.dropmenuobj.style.top = this.dropmenuobj.y - 145 + "px"

                    if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu1_e1")
                        this.dropmenuobj.style.left = 212 + "px"
                    else if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu2_e2")
                        this.dropmenuobj.style.left = 348 + "px"
                    this.dropmenuobj.style.top = this.dropmenuobj.y - 145 + "px"
                }
            }
            else {
                if (browserName == "Microsoft Internet Explorer") {
                    // IE
                    //alert("Browser: IE ");

                    //this.dropmenuobj.style.left = "230px"
                    //this.dropmenuobj.style.left = "368px"
                    //this.dropmenuobj.style.top = "326px"

                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 248 + "px"  // my PC
                    //this.dropmenuobj.style.top = this.dropmenuobj.y - 151 + "px"

                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 211 + "px"

                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 212 + "px"
                    //this.dropmenuobj.style.top = this.dropmenuobj.y - 149 + "px"

                    var iIndex = browserVersion.toUpperCase().indexOf('MSIE');
                    var bVersion = browserVersion.substring(iIndex);
                    bVersion = bVersion.substring(5, 5 + 1);
                    //alert(bVersion);

                    if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu1_e1")
                        this.dropmenuobj.style.left = 211 + "px"
                    else if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu2_e2")
                        this.dropmenuobj.style.left = 347 + "px"
                    if (bVersion == 7) {
                        //alert("hi");
                        this.dropmenuobj.style.top = this.dropmenuobj.y - 160 + "px"
                    }
                    else if (bVersion != 7) {
                        //alert("hi ! 7");
                        this.dropmenuobj.style.top = this.dropmenuobj.y - 149 + "px"
                    }

                }
                else {
                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 248 + "px"
                    //this.dropmenuobj.style.top = this.dropmenuobj.y - 151 + "px"

                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 211 + "px"

                    //this.dropmenuobj.style.left = this.dropmenuobj.x - 212 + "px"
                    //this.dropmenuobj.style.top = this.dropmenuobj.y - 149 + "px"

                    if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu1_e1")
                        this.dropmenuobj.style.left = 212 + "px"
                    else if (this.dropmenuobj.getAttribute("name").toString().toLowerCase() == "dropmenu2_e2")
                        this.dropmenuobj.style.left = 348 + "px"


                }

            }
            this.previousmenuitem = obj //remember main menu item mouse moved out from (and into current menu item)
            this.positionshim() //call iframe shim function
        }
    },

    contains_firefox: function (a, b) {
        while (b.parentNode)
            if ((b = b.parentNode) == a)
                return true;
        return false;
    },

    dynamichide: function (e, obj2) { //obj2 refers to tab menu item mouse is currently over
        var evtobj = window.event ? window.event : e
        if (this.ie && !this.dropmenuobj.contains(evtobj.toElement))
            this.delayhidemenu(obj2)
        else if (this.firefox && e.currentTarget != evtobj.relatedTarget && !this.contains_firefox(evtobj.currentTarget, evtobj.relatedTarget))
            this.delayhidemenu(obj2)
    },

    delayhidemenu: function (obj2) {
        this.delayhide = setTimeout(function () { tabdropdown.dropmenuobj.style.visibility = 'hidden'; if (obj2.parentNode.className.indexOf('default') == -1) obj2.parentNode.className = '' }, this.disappeardelay) //hide menu
    },

    clearhidemenu: function () {
        if (this.delayhide != "undefined")
            clearTimeout(this.delayhide)
    },

    positionshim: function () { //display iframe shim function
        if (this.enableiframeshim && typeof this.shimobject != "undefined") {
            if (this.dropmenuobj.style.visibility == "visible") {
                this.shimobject.style.width = this.dropmenuobj.offsetWidth + "px"
                this.shimobject.style.height = this.dropmenuobj.offsetHeight + "px"
                this.shimobject.style.left = this.dropmenuobj.style.left
                this.shimobject.style.top = this.dropmenuobj.style.top
            }
            this.shimobject.style.display = (this.dropmenuobj.style.visibility == "visible") ? "block" : "none"
        }
    },

    hideshim: function () {
        if (this.enableiframeshim && typeof this.shimobject != "undefined")
            this.shimobject.style.display = 'none'
    },

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

    init: function (menuid, dselected) {
        this.standardbody = (document.compatMode == "CSS1Compat") ? document.documentElement : document.body //create reference to common "body" across doctypes
        var menuitems = document.getElementById(menuid).getElementsByTagName("a")
        for (var i = 0; i < menuitems.length; i++) {
            if (menuitems[i].getAttribute("rel")) {
                var relvalue = menuitems[i].getAttribute("rel")
                document.getElementById(relvalue).firstlink = document.getElementById(relvalue).getElementsByTagName("a")[0]
                menuitems[i].onmouseover = function (e) {
                    var event = typeof e != "undefined" ? e : window.event
                    tabdropdown.dropit(this, event, this.getAttribute("rel"))
                }
            }
            if (dselected == "auto" && typeof setalready == "undefined" && this.isSelected(menuitems[i].href)) {
                menuitems[i].parentNode.className += " selected default"
                var setalready = true
            }
            else if (parseInt(dselected) == i)
                menuitems[i].parentNode.className += " selected default"
        }
    }

}