//** 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

//** Dec 17th, 10" (v1.5): Updated menu shadow to use CSS3 box shadows when the browser is FF3.5+, IE9+, Opera9.5+, or Safari3+/Chrome. Only .js file changed.

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/menu/down.gif', 10],
   right: ['rightarrowclass', '../images/menu/right.png']
   },
   */
  transition: {
    overtime: 300,
    outtime: 300
  }, //duration of slide in/ out animation, in milliseconds
  shadow: {
    enable: false,
    offsetx: 5,
    offsety: 5
  }, //enable shadow?
  showhidedelay: {
    showdelay: 100,
    hidedelay: 200
  }, //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,
  css3support: window.msPerformance || (!document.all && document.querySelector), //detect browsers that support CSS3 box shadows (ie9+ or FF3.5+, Safari3+, 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)
      }
    })
  },
  
  
  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 (smoothmenu.shadow.enable && !smoothmenu.css3support) { //if shadows enabled and browser doesn't support CSS3 box shadows
        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 && !smoothmenu.css3support) {
              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(){
          $targetul.animate({
            height: 'hide',
            opacity: 'hide'
          }, ddsmoothmenu.transition.outtime)
          if (smoothmenu.shadow.enable && !smoothmenu.css3support) {
            if (ddsmoothmenu.detectwebkit) { //in WebKit browsers, set first child shadow's opacity to 0, as "overflow:hidden" doesn't work in them
              header.$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()
    if (smoothmenu.shadow.enable && smoothmenu.css3support) { //if shadows enabled and browser supports CSS3 shadows
      var $toplevelul = $('#' + setting.mainmenuid + ' ul li ul')
      var css3shadow = parseInt(smoothmenu.shadow.offsetx) + "px " + parseInt(smoothmenu.shadow.offsety) + "px 5px #aaa" //construct CSS3 box-shadow value
      var shadowprop = ["boxShadow", "MozBoxShadow", "WebkitBoxShadow", "MsBoxShadow"] //possible vendor specific CSS3 shadow properties
      for (var i = 0; i < shadowprop.length; i++) {
        $toplevelul.css(shadowprop[i], css3shadow)
      }
    }
    $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