//** 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.
//** Feb 2nd, 10" (v1.4): Adds ability to specify delay before sub menus appear and disappear, respectively. See showhidedelay variable below

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'] },
    showHeaderArrow: false,
    transition: { overtime: 180, outtime: 100 }, //duration of slide in/ out animation, in milliseconds
    shadow: { enable: true, offsetx: 3, offsety: 3 }, //enable shadow?
    showhidedelay: { showdelay: 70, hidedelay: 70 }, //set delay in milliseconds before sub menus appear and disappear, respectively

    ///////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("<span style='color:white;'>Loading Menu...</span>")
        if (setting.contentsource[2] != undefined && setting.contentsource[2] != null && setting.contentsource[2] == "crossdomain") {
            requestCrossDomain(setting.contentsource[1], function (content) {
                $menucontainer.html(content);
                ddsmoothmenu.buildmenu($, setting);
            });
        }
        else {
            $.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' })
            $subul.data('timers', {})
            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 (this.istopheader && !ddsmoothmenu.showHeaderArrow) {
                var aHref = $curobj.children("a:eq(0)")
                aHref.css("padding-left", "17px");
                aHref.css("padding-right", "17px");
                //aHref.css("width","112px");
                aHref.css("text-align", "center");
            }
            else {
                $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 = $subul //reference UL to reveal
			    var header = $curobj.get(0) //reference header LI as DOM object
			    clearTimeout($targetul.data('timers').hidetimer)
			    $targetul.data('timers').showtimer = setTimeout(function () {
			        header._offsets = { left: $curobj.offset().left, top: $curobj.offset().top }
			        var menuleft = header.istopheader && setting.orientation != 'v' ? 0 : header._dimensions.w
			        menuleft = (header._offsets.left + menuleft + header._dimensions.subulw > $(window).width()) ? (header.istopheader && setting.orientation != 'v' ? -header._dimensions.subulw + header._dimensions.w : -header._dimensions.w) : menuleft //calculate this sub menu's offsets from its parent
			        if ($targetul.queue().length <= 1) { //if 1 or less queued animations			           
			            $targetul.css({ left: menuleft + "px", width: header._dimensions.subulw + 'px' }).animate({ height: 'show', opacity: 'show' }, ddsmoothmenu.transition.overtime)
			            if (smoothmenu.shadow.enable) {
			                var shadowleft = header.istopheader ? $targetul.offset().left + ddsmoothmenu.shadow.offsetx : menuleft
			                var shadowtop = header.istopheader ? $targetul.offset().top + smoothmenu.shadow.offsety : header._shadowoffset.y
			                if (!header.istopheader && ddsmoothmenu.detectwebkit) { //in WebKit browsers, restore shadow's opacity to full
			                    header.$shadow.css({ opacity: 1 })
			                }
			                header.$shadow.css({ overflow: '', width: header._dimensions.subulw + 'px', left: shadowleft + 'px', top: shadowtop + 'px' }).animate({ height: header._dimensions.subulh + 'px' }, ddsmoothmenu.transition.overtime)
			            }
			        }
			    }, ddsmoothmenu.showhidedelay.showdelay)
			},
			function (e) {
			    var $targetul = $subul
			    var header = $curobj.get(0)
			    clearTimeout($targetul.data('timers').showtimer)
			    $targetul.data('timers').hidetimer = setTimeout(function () {
			        $targetul.animate({ height: 'hide', opacity: 'hide' }, ddsmoothmenu.transition.outtime)
			        if (smoothmenu.shadow.enable) {
			            if (ddsmoothmenu.detectwebkit) { //in WebKit browsers, set first child shadow's opacity to 0, as "overflow:hidden" doesn't work in them
			                header.$shadow.children('div:eq(0)').css({ opacity: 0 })
			            }
			            header.$shadow.css({ overflow: 'hidden' }).animate({ height: 0 }, ddsmoothmenu.transition.outtime)
			        }
			    }, ddsmoothmenu.showhidedelay.hidedelay)
			}
		) //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
    // Accepts a url and a callback function to run.
    function requestCrossDomain(site, callback) {
        // If no url was passed, exit.
        if (!site) {
            alert('No site was passed.');
            return false;
        }

        // Take the provided url, and add it to a YQL query. Make sure you encode it!
        var yql = 'http://query.yahooapis.com/v1/public/yql?q=' + encodeURIComponent('select * from html where url="' + site + '"') + '&format=xml&callback=?';
        //var yql = 'http://query.yahooapis.com/v1/public/yql?q=' + encodeURIComponent('select * from html where url="' + site + '"') + '&format=xml&callback=?&response.maxAge=1';

        // Request that YSQL string, and run a callback function.
        // Pass a defined function to prevent cache-busting.
        $.getJSON(yql, cbFunc);

        function cbFunc(data) {
            // If we have something to work with...
            if (data.results[0]) {
                // Strip out all script tags, for security reasons.
                // BE VERY CAREFUL. This helps, but we should do more.
                data = data.results[0].replace(/<script[^>]*>[\s\S]*?<\/script>/gi, '');
                data = data.replace("<body>", ""); data = data.replace("</body>", "");
                data = data.replace("<p>", ""); data = data.replace("</p>", "");
                //alert(data);
                // If the user passed a callback, and it
                // is a function, call it, and send through the data var.
                if (typeof callback === 'function') {
                    callback(data);
                }
            }
            // Else, Maybe we requested a site that doesn't exist, and nothing returned.
            else throw new Error('Nothing returned from getJSON.');
        }
    }