//** 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', 'down.gif', 23],
    right:['rightarrowclass', 'right.gif']
  },
  transition: {
    overtime:200,
    outtime:200
  }, //duration of slide in/ out animation, in milliseconds
  shadow: {
    enable:false,
    offsetx:3,
    offsety:3
  }, //enable shadow?
  showhidedelay: {
    showdelay: 100,
    hidedelay: 600
  }, //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,
  currentmenus: null,

  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 $mainmenu=$("#"+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.istopheader=$curobj.parents("ul").length==1? true : false //is top level header?
      $curobj.children("a:eq(0)").css(this.istopheader? {
        paddingRight: ddsmoothmenu.arrowimages.down[2]
      } : {}).append( //add arrow images
        '<span class="' + (this.istopheader && setting.orientation!='v'? ddsmoothmenu.arrowimages.down[0] : ddsmoothmenu.arrowimages.right[0])
        +'" style="border:0"></span>'
        )
      $subul.data('timers', {})
      this._dimensions={
        w:this.offsetWidth,
        h:this.offsetHeight,
        subulw:$subul.outerWidth(),
        subulh:$subul.outerHeight()
      }
      $subul.css({
        top:this.istopheader && setting.orientation!='v'? this._dimensions.h+"px" : 0
      })
      if (ddsmoothmenu.shadow.enable){
        this._shadowoffset={
          x:(this.istopheader?$subul.offset().left+ddsmoothmenu.shadow.offsetx : this._dimensions.w),
          y:(this.istopheader? $subul.offset().top+ddsmoothmenu.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(
        /************************************/
        /*            onmouseover           */
        /************************************/
        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() {
              ddsmoothmenu.animate_show(header, $targetul, $curobj, setting);
            },
            header.istopheader ? 0 : ddsmoothmenu.showhidedelay.showdelay
            )
        },
        /************************************/
        /*            onmouseout            */
        /************************************/
        function(e){
          var $targetul=$subul
          var header=$curobj.get(0)
          clearTimeout($targetul.data('timers').showtimer)
          $targetul.data('timers').hidetimer=setTimeout(
            function() {
              ddsmoothmenu.animate_hide(header, $targetul)
            },
            ddsmoothmenu.showhidedelay.hidedelay
            )
        }
        /************************************/
        ) //end hover
    }) //end $headers.each()
    $mainmenu.find("ul").css({
      display:'none',
      visibility:'visible'
    })
  },

  clear_before_show:function($curobj, header, $targetul){
    var level = $curobj.parents("ul").length -1;
    if (ddsmoothmenu.currentmenus && ddsmoothmenu.currentmenus[level]) {
      var currenttopmenu = ddsmoothmenu.currentmenus[level];
      if (currenttopmenu[0] != header && currenttopmenu[1] != $targetul) {
        ddsmoothmenu.animate_hide(currenttopmenu[0], currenttopmenu[1]);
        if (ddsmoothmenu.currentmenus[level]) delete ddsmoothmenu.currentmenus[level];
      }
    }
    ddsmoothmenu.currentmenus[level] = new Array(header, $targetul);
  },

  animate_show:function(header, $targetul, $curobj, setting){
    /*begin hack*/
    ddsmoothmenu.clear_before_show($curobj, header, $targetul)
    /*end hack*/

    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

    $(header).addClass('selected')

    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 (ddsmoothmenu.shadow.enable){
        var shadowleft=header.istopheader? $targetul.offset().left+ddsmoothmenu.shadow.offsetx : menuleft
        var shadowtop=header.istopheader?$targetul.offset().top+ddsmoothmenu.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)
      }
    }
  },

  animate_hide:function(header, $targetul, quick){
    clearTimeout($targetul.data('timers').hidetimer)
    $targetul.animate({
      height:'hide',
      opacity:'hide'
    }, quick ? 0 : ddsmoothmenu.transition.outtime)

    if (ddsmoothmenu.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
      }, quick ? 0 : ddsmoothmenu.transition.outtime)
    }

    $(header).removeClass('selected')

    /*begin hack*/
    ddsmoothmenu.clear_after_hide($targetul);
  /*end hack*/
  },

  clear_after_hide:function($targetul){
    var level = $targetul.parents("ul").length -1;
    for ( var i=ddsmoothmenu.currentmenus.length-1; i>level; i-- ){
      var currentmenu = ddsmoothmenu.currentmenus[i];
      if (currentmenu) {
        ddsmoothmenu.animate_hide(currentmenu[0], currentmenu[1], true);
        ddsmoothmenu.currentmenus.splice(i, 1);
      }
    }
  //ddsmoothmenu.currentmenus.splice(level, 1);
  },

  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
    ddsmoothmenu.currentmenus = new Array();
    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