//** 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', 'down.gif'], right:['rightarrowclass', 'right.gif']},

transition: {overtime:300, outtime:300}, //duration of slide in/ out animation, in milliseconds
shadow: {enabled:false, 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=$('<div class="ddshadow'+(this.istopheader? ' toplevelshadow' : '')+'"></div>').prependTo($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? 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: "smoothmenu1", //menu DIV id
       //customtheme: ["1c5a80", "#18374a"], //override default menu CSS background values? Uncomment: ["normal_background", "hover_background"]
       contentsource: "markup" //"markup" or ["container_id", "path_to_menu_file"]
})