//Drop Down Tabs Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)

//Created: May 16th, 07'



var tabdropdown={

	disappeardelay: 200, //set delay in miliseconds before menu disappears onmouseout

	disablemenuclick: false, //when user clicks on a menu item with a drop down menu, disable menu item's link?

	enableiframeshim: 1, //1 or 0, for true or false



	//No need to edit beyond here////////////////////////

	dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all, previousmenuitem:null,

	currentpageurl: window.location.href.replace("http://"+window.location.hostname, "").replace(/^\//, ""), //get current page url (minus hostname, ie: http://www.dynamicdrive.com/)



	getposOffset:function(what, offsettype){

		var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;

		var parentEl=what.offsetParent;

			while (parentEl!=null){

				totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;

				parentEl=parentEl.offsetParent;

			}

		return totaloffset;

	},



	showhide:function(obj, e, obj2){ //obj refers to drop down menu, obj2 refers to tab menu item mouse is currently over

		if (this.ie || this.firefox)

			this.dropmenuobj.style.left=this.dropmenuobj.style.top="-500px"

		if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover"){

			if (obj2.parentNode.className.indexOf("default")==-1) //if tab isn't a default selected one

				obj2.parentNode.className="selected"

			obj.visibility="visible"

			}

		else if (e.type=="click")

			obj.visibility="hidden"

	},



	iecompattest:function(){

		return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body

	},



	clearbrowseredge:function(obj, whichedge){

		var edgeoffset=0

		if (whichedge=="rightedge"){

			var windowedge=this.ie && !window.opera? this.standardbody.scrollLeft+this.standardbody.clientWidth-15 : window.pageXOffset+window.innerWidth-15

			this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetWidth

		if (windowedge-this.dropmenuobj.x < this.dropmenuobj.contentmeasure)  //move menu to the left?

			edgeoffset=this.dropmenuobj.contentmeasure-obj.offsetWidth

		}

		else{

			var topedge=this.ie && !window.opera? this.standardbody.scrollTop : window.pageYOffset

			var windowedge=this.ie && !window.opera? this.standardbody.scrollTop+this.standardbody.clientHeight-15 : window.pageYOffset+window.innerHeight-18

			this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetHeight

			if (windowedge-this.dropmenuobj.y < this.dropmenuobj.contentmeasure){ //move up?

				edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight

				if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) //up no good either?

					edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge

			}

			this.dropmenuobj.firstlink.style.borderTopWidth=(edgeoffset==0)? 0 : "1px" //Add 1px top border to menu if dropping up

		}

		return edgeoffset

	},



	dropit:function(obj, e, dropmenuID){

		if (this.dropmenuobj!=null){ //hide previous menu

			this.dropmenuobj.style.visibility="hidden" //hide menu

			if (this.previousmenuitem!=null && this.previousmenuitem!=obj){

				if (this.previousmenuitem.parentNode.className.indexOf("default")==-1) //If the tab isn't a default selected one

					this.previousmenuitem.parentNode.className=""

			}

		}

		this.clearhidemenu()

		if (this.ie||this.firefox){

			obj.onmouseout=function(){tabdropdown.delayhidemenu(obj)}

			obj.onclick=function(){return !tabdropdown.disablemenuclick} //disable main menu item link onclick?

			this.dropmenuobj=document.getElementById(dropmenuID)

			this.dropmenuobj.onmouseover=function(){tabdropdown.clearhidemenu()}

			this.dropmenuobj.onmouseout=function(e){tabdropdown.dynamichide(e, obj)}

			this.dropmenuobj.onclick=function(){tabdropdown.delayhidemenu(obj)}

			this.showhide(this.dropmenuobj.style, e, obj)

			this.dropmenuobj.x=this.getposOffset(obj, "left")

			this.dropmenuobj.y=this.getposOffset(obj, "top")

			this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")+"px"

			this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1+"px"

			this.previousmenuitem=obj //remember main menu item mouse moved out from (and into current menu item)

			this.positionshim() //call iframe shim function

		}

	},



	contains_firefox:function(a, b) {

		while (b.parentNode)

		if ((b = b.parentNode) == a)

			return true;

		return false;

	},



	dynamichide:function(e, obj2){ //obj2 refers to tab menu item mouse is currently over

		var evtobj=window.event? window.event : e

		if (this.ie&&!this.dropmenuobj.contains(evtobj.toElement))

			this.delayhidemenu(obj2)

		else if (this.firefox&&e.currentTarget!= evtobj.relatedTarget&& !this.contains_firefox(evtobj.currentTarget, evtobj.relatedTarget))

			this.delayhidemenu(obj2)

	},



	delayhidemenu:function(obj2){

		this.delayhide=setTimeout(function(){tabdropdown.dropmenuobj.style.visibility='hidden'; if (obj2.parentNode.className.indexOf('default')==-1) obj2.parentNode.className=''},this.disappeardelay) //hide menu

	},



	clearhidemenu:function(){

		if (this.delayhide!="undefined")

			clearTimeout(this.delayhide)

	},



	positionshim:function(){ //display iframe shim function

		if (this.enableiframeshim && typeof this.shimobject!="undefined"){

			if (this.dropmenuobj.style.visibility=="visible"){

				this.shimobject.style.width=this.dropmenuobj.offsetWidth+"px"

				this.shimobject.style.height=this.dropmenuobj.offsetHeight+"px"

				this.shimobject.style.left=this.dropmenuobj.style.left

				this.shimobject.style.top=this.dropmenuobj.style.top

			}

		this.shimobject.style.display=(this.dropmenuobj.style.visibility=="visible")? "block" : "none"

		}

	},



	hideshim:function(){

		if (this.enableiframeshim && typeof this.shimobject!="undefined")

			this.shimobject.style.display='none'

	},



isSelected:function(menuurl){

	var menuurl=menuurl.replace("http://"+menuurl.hostname, "").replace(/^\//, "")

	return (tabdropdown.currentpageurl==menuurl)

},



	init:function(menuid, dselected){

		this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes

		var menuitems=document.getElementById(menuid).getElementsByTagName("a")

		for (var i=0; i<menuitems.length; i++){

			if (menuitems[i].getAttribute("rel")){

				var relvalue=menuitems[i].getAttribute("rel")

				document.getElementById(relvalue).firstlink=document.getElementById(relvalue).getElementsByTagName("a")[0]

				menuitems[i].onmouseover=function(e){

					var event=typeof e!="undefined"? e : window.event

					tabdropdown.dropit(this, event, this.getAttribute("rel"))

				}

			}

			if (dselected=="auto" && typeof setalready=="undefined" && this.isSelected(menuitems[i].href)){

				menuitems[i].parentNode.className+=" selected default"

				var setalready=true

			}

			else if (parseInt(dselected)==i)

				menuitems[i].parentNode.className+=" selected default"

		}

	}



}





function MM_swapImgRestore() { //v3.0





  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;





}







function MM_preloadImages() { //v3.0



  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();



    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)





    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}





}





function MM_findObj(n, d) { //v4.01



  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {

    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}



  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];



  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);



  if(!x && d.getElementById) x=d.getElementById(n); return x;



}



function MM_swapImage() { //v3.0

  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)



   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}



}