var ddsmoothmenu={
	transition: {overtime:0, outtime:0}, //duration of slide in/ out animation, in milliseconds
	shadow: {enable:false, offsetx:0, offsety:0}, //enable shadow?
	showhidedelay: {showdelay: 0, hidedelay: 0}, //set delay in milliseconds before sub menus appear and disappear, respectively
	
	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) //reference main menu UL
		$mainmenu.parent().get(0).className=setting.classname 
		var $headers=$mainmenu.find(".nav_drop").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('.nav_drop: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})
			
			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 $targetul=$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+"21px", width:header._dimensions.subulw+'px'}).animate({height:'show',opacity:'show'}, ddsmoothmenu.transition.overtime)
							if (smoothmenu.shadow.enable){
								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(){
						$targetul.animate({height:'hide', opacity:'hide'}, ddsmoothmenu.transition.outtime)
						if (smoothmenu.shadow.enable){
							if (ddsmoothmenu.detectwebkit){ //in WebKit browsers, set first child shadow's opacity to 0, as "overflow:hidden" doesn't work in them
								header.$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()
		$mainmenu.find(".nav_drop").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
ddsmoothmenu.init({mainmenuid: "bg",contentsource: "markup"})