//** 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
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', '/html/themes/mpti/mpti_images/home.gif', 23], right:['rightarrowclass', '/html/themes/mpti/mpti_images/home.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.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})
      $curobj.children("a:eq(0)").css({top:this.istopheader? this._dimensions.h+"px" : 0})
      if (smoothmenu.shadow.enabled){
         this._shadowoffset={x:(this.istopheader?$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"]
})