//** 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', 'down.gif', 0], right:['rightarrowclass', 'right.gif',0]},

transition: {overtime:200, outtime:200}, //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):