//** Smooth Navigational Menu- By Dynamic Drive DHTML code library: http://www.dynamicdrive.com
//** Script Download/ instructions page: http://www.dynamicdrive.com/dynamicindex1/ddlevelsmenu/
//** Menu created: Nov 12, 2008
//** Dec 12th, 08" (v1.01): Fixed Shadow issue when multiple LIs within the same UL (level) contain sub menus: http://www.dynamicdrive.com/forums/showthread.php?t=39177&highlight=smooth
//** Feb 11th, 09" (v1.02): The currently active main menu item (LI A) now gets a CSS class of ".selected", including sub menu items.
//** May 1st, 09" (v1.3):
//** 1) Now supports vertical (side bar) menu mode- set "orientation" to 'v'
//** 2) In IE6, shadows are now always disabled
//** July 27th, 09" (v1.31): Fixed bug so shadows can be disabled if desired.

var ddsmoothmenu = {

    //Specify full URL to down and right arrow images (23 is padding-right added to top level LIs with drop downs):
    arrowimages: {
        down: ['downarrowclass', 'images/down.gif', 23],
        right: ['rightarrowclass', 'images/right.gif']
    },

    transition: {
        overtime: 300,
        outtime: 300
    },
    //duration of slide in/ out animation, in milliseconds
    shadow: {
        enable: false,
        offsetx: 5,
        offsety: 5
    },

    ///////Stop configuring beyond here///////////////////////////
    detectwebkit: navigator.userAgent.toLowerCase().indexOf("applewebkit") != -1,
    //detect WebKit browsers (Safari, Chrome etc)
    detectie6: document.all && !window.XMLHttpRequest,

    getajaxmenu: function ($, setting) { //function to fetch external page containing the panel DIVs
        var $menucontainer = $('#' + setting.contentsource[0]) //reference empty div on page that will hold menu
        $menucontainer.html("Loading Menu...")
        $.ajax({
            url: setting.contentsource[1],
            //path to external menu file
            async: true,
            error: function (ajaxrequest) {
                $menucontainer.html('Error fetching content. Server Response: ' + ajaxrequest.responseText)
            },
            success: function (content) {
                $menucontainer.html(content)
                ddsmoothmenu.buildmenu($, setting)
            }
        })
    },


    buildmenu: function ($, setting) {
        var smoothmenu = ddsmoothmenu
        var $mainmenu = $("#" + setting.mainmenuid + ">ul") //reference main menu UL
        $mainmenu.parent().get(0).className = setting.classname || "ddsmoothmenu"
        var $headers = $mainmenu.find("ul").parent()
        $headers.hover(

        function (e) {
            $(this).children('a:eq(0)').addClass('selected')
        }, function (e) {
            $(this).children('a:eq(0)').removeClass('selected')
        })
        $headers.each(function (i) { //loop through each LI header
            var $curobj = $(this).css({
                zIndex: 100 - i
            }) //reference current LI header
            var $subul = $(this).find('ul:eq(0)').css({
                display: 'block'
            })
            this._dimensions = {
                w: this.offsetWidth,
                h: this.offsetHeight,
                subulw: $subul.outerWidth(),
                subulh: $subul.outerHeight()
            }
            this.istopheader = $curobj.parents("ul").length == 1 ? true : false //is top level header?
            $subul.css({
                top: this.istopheader && setting.orientation != 'v' ? this._dimensions.h + "px" : 0
            })
            $curobj.children("a:eq(0)").css(this.istopheader ? {
                paddingRight: smoothmenu.arrowimages.down[2]
            } : {}).append( //add arrow images
            '<img src="' + (this.istopheader && setting.orientation != 'v' ? smoothmenu.arrowimages.down[1] : smoothmenu.arrowimages.right[1]) + '" class="' + (this.istopheader && setting.orientation != 'v' ? smoothmenu.arrowimages.down[0] : smoothmenu.arrowimages.right[0]) + '" style="border:0;" />')
            if (smoothmenu.shadow.enable) {
                this._shadowoffset = {
                    x: (this.istopheader ? $subul.offset().left + smoothmenu.shadow.offsetx : this._dimensions.w),
                    y: (this.istopheader ? $subul.offset().top + smoothmenu.shadow.offsety : $curobj.position().top)
                } //store this shadow's offsets
                if (this.istopheader) $parentshadow = $(document.body)
                else {
                    var $parentLi = $curobj.parents("li:eq(0)")
                    $parentshadow = $parentLi.get(0).$shadow
                }
                this.$shadow = $('<div class="ddshadow' + (this.istopheader ? ' toplevelshadow' : '') + '"></div>').prependTo($parentshadow).css({
                    left: this._shadowoffset.x + 'px',
                    top: this._shadowoffset.y + 'px'
                }) //insert shadow DIV and set it to parent node for the next shadow div
            }
            $curobj.hover(

            function (e) {
                var $targetul = $(this).children("ul:eq(0)")
                this._offsets = {
                    left: $(this).offset().left,
                    top: $(this).offset().top
                }
                var menuleft = this.istopheader && setting.orientation != 'v' ? 0 : this._dimensions.w
                menuleft = (this._offsets.left + menuleft + this._dimensions.subulw > $(window).width()) ? (this.istopheader && setting.orientation != 'v' ? -this._dimensions.subulw + this._dimensions.w : -this._dimensions.w) : menuleft //calculate this sub menu's offsets from its parent
                if ($targetul.queue().length <= 1) { //if 1 or less queued animations
                    $targetul.css({
                        left: menuleft + "px",
                        width: this._dimensions.subulw + 'px'
                    }).animate({
                        height: 'show',
                        opacity: 'show'
                    }, ddsmoothmenu.transition.overtime)
                    if (smoothmenu.shadow.enable) {
                        var shadowleft = this.istopheader ? $targetul.offset().left + ddsmoothmenu.shadow.offsetx : menuleft
                        var shadowtop = this.istopheader ? $targetul.offset().top + smoothmenu.shadow.offsety : this._shadowoffset.y
                        if (!this.istopheader && ddsmoothmenu.detectwebkit) { //in WebKit browsers, restore shadow's opacity to full
                            this.$shadow.css({
                                opacity: 1
                            })
                        }
                        this.$shadow.css({
                            overflow: '',
                            width: this._dimensions.subulw + 'px',
                            left: shadowleft + 'px',
                            top: shadowtop + 'px'
                        }).animate({
                            height: this._dimensions.subulh + 'px'
                        }, ddsmoothmenu.transition.overtime)
                    }
                }
            }, function (e) {
                var $targetul = $(this).children("ul:eq(0)")
                $targetul.animate({
                    height: 'hide',
                    opacity: 'hide'
                }, ddsmoothmenu.transition.outtime)
                if (smoothmenu.shadow.enable) {
                    if (ddsmoothmenu.detectwebkit) { //in WebKit browsers, set first child shadow's opacity to 0, as "overflow:hidden" doesn't work in them
                        this.$shadow.children('div:eq(0)').css({
                            opacity: 0
                        })
                    }
                    this.$shadow.css({
                        overflow: 'hidden'
                    }).animate({
                        height: 0
                    }, ddsmoothmenu.transition.outtime)
                }
            }) //end hover
        }) //end $headers.each()
        $mainmenu.find("ul").css({
            display: 'none',
            visibility: 'visible'
        })
    },

    init: function (setting) {
        if (typeof setting.customtheme == "object" && setting.customtheme.length == 2) { //override default menu colors (default/hover) with custom set?
            var mainmenuid = '#' + setting.mainmenuid
            var mainselector = (setting.orientation == "v") ? mainmenuid : mainmenuid + ', ' + mainmenuid
            document.write('<style type="text/css">\n' + mainselector + ' ul li a {background:' + setting.customtheme[0] + ';}\n' + mainmenuid + ' ul li a:hover {background:' + setting.customtheme[1] + ';}\n' + '</style>')
        }
        this.shadow.enable = (document.all && !window.XMLHttpRequest) ? false : this.shadow.enable //in IE6, always disable shadow
        jQuery(document).ready(function ($) { //ajax menu?
            if (typeof setting.contentsource == "object") { //if external ajax menu
                ddsmoothmenu.getajaxmenu($, setting)
            }
            else { //else if markup menu
                ddsmoothmenu.buildmenu($, setting)
            }
        })
    }

} //end ddsmoothmenu variable
//Initialize Menu instance(s):