//** 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.

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', 'tl_files/abw/include/down.gif', 23], right:['rightarrowclass', 'tl_files/abw/include/right.gif']},

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

///////Stop configuring beyond here///////////////////////////

detectwebkit: navigator.userAgent.toLowerCase().indexOf("applewebkit")!=-1, //detect WebKit browsers (Safari, Chrome etc)

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)
                }
        })
},

buildshadow:function($, $subul){

},

buildmenu:function($, setting){
        var smoothmenu=ddsmoothmenu
        var $mainmenu=$("#"+setting.mainmenuid+">ul") //reference main menu UL
        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){
                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? this._dimensions.h+"px" : 0})
                $curobj.children("a:eq(0)").css(this.istopheader? {paddingRight: smoothmenu.arrowimages.down[2]} : {}).append( //add arrow images
                        '<img src="'+ (this.istopheader? smoothmenu.arrowimages.down[1] : smoothmenu.arrowimages.right[1])
                        +'" class="' + (this.istopheader? smoothmenu.arrowimages.down[0] : smoothmenu.arrowimages.right[0])
                        + '" style="border:0;" />'
                )
                if (smoothmenu.shadow.enabled){
                        this._shadowoffset={x:(this.istopheader?$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=$('<div></div>').prependTo($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? 0 : this._dimensions.w
                                menuleft=(this._offsets.left+menuleft+this._dimensions.subulw>$(window).width())? (this.istopheader? -this._dimensions.subulw+this._dimensions.w : -this._dimensions.w) : menuleft //calculate this sub menu's offsets from its parent
                                if ($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.enabled){
                                                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)")
                                $targetul.animate({height:'hide', opacity:'hide'}, ddsmoothmenu.transition.outtime)
                                if (smoothmenu.shadow.enabled){
                                        if (ddsmoothmenu.detectwebkit){ //in WebKit browsers, set first child shadow's opacity to 0, as "overflow:hidden" doesn't work in them
                                                this.$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){
                var mainmenuid='#'+setting.mainmenuid
                document.write('<style type="text/css">\n'
                        +mainmenuid+', '+mainmenuid+' ul li a {background:'+setting.customtheme[0]+';}\n'
                        +mainmenuid+' ul li a:hover {background:'+setting.customtheme[1]+';}\n'
                +'</style>')
        }
        jQuery(document).ready(function($){ //override default menu colors (default/hover) with custom set?
                if (typeof setting.contentsource=="object"){ //if external ajax menu
                        ddsmoothmenu.getajaxmenu($, setting)
                }
                else{ //else if markup menu
                        ddsmoothmenu.buildmenu($, setting)
                }
        })
}

} //end ddsmoothmenu variable

//Initialize Menu instance(s):

ddsmoothmenu.init({
        mainmenuid: "mainmenu", //menu DIV id
        contentsource: "markup" //"markup" or ["container_id", "path_to_menu_file"]
})