var isDOM=document.getElementById?1:0,isIE=document.all?1:0,isNS4=navigator.appName=='Netscape'&&!isDOM?1:0,isOp=self.opera?1:0,isDyn=isDOM||isIE||isNS4;

function getRef(i,p)
	{
	p=!p?document:p.navigator?p.document:p;
	return isIE?p.all[i]:isDOM?(p.getElementById?p:p.ownerDocument).getElementById(i):isNS4?p.layers[i]:null
	};

function getSty(i,p)
	{
		var r=getRef(i,p);return r?isNS4?r:r.style:null
	};

if(!self.LayerObj)
	var LayerObj=new Function('i','p','this.ref=getRef(i,p);this.sty=getSty(i,p);return this');

function getLyr(i,p){return new LayerObj(i,p)};

function LyrFn(n,f)
	{LayerObj.prototype[n]=new Function('var a=arguments,p=a[0],px=isNS4||isOp?0:"px";with(this){'+f+'}')};
	
LyrFn('x','if(!isNaN(p))sty.left=p+px;else return parseInt(sty.left)');
LyrFn('y','if(!isNaN(p))sty.top=p+px;else return parseInt(sty.top)');

function addEvent(o,n,f,l)
{
	var a='addEventListener',h='on'+n;
	if(o[a]&&!l)
		return o[a](n,f,false);
	if(o[h])
	{
		o._c|=0;
		var b='_b'+(++o._c);o[b]=o[h]
	}
	o[h]=function(e)
	{
		e=e||self.event;
		var r=true;if(o[b])r=o[b](e)!=false&&r;
		o._f=f;r=o._f(e)!=false&&r;return r
	}
};

function FSMenu(myName,nested,cssProp,cssVis,cssHid)
{
	this.myName=myName;
	this.nested=nested;
	this.cssProp=cssProp;
	this.cssVis=cssVis;
	this.cssHid=cssHid;
	this.cssLitClass='';
	this.menus={root:new FSMenuNode('root',true,this)};
	this.menuToShow=[];
	this.mtsTimer=null;this.showDelay=0;
	this.switchDelay=125;
	this.hideDelay=500;
	this.showOnClick=0;
	this.animations=[];
	this.animSpeed=100
};

FSMenu.prototype.show=function(mN)
{
	with(this)
	{
		menuToShow.length=arguments.length;

		for(var i=0;i<arguments.length;i++)
			menuToShow[i]=arguments[i];
		clearTimeout(mtsTimer);
		if(!nested)
			mtsTimer=setTimeout(myName+'.menus.root.over()',10)
	}
};

FSMenu.prototype.hide=function(mN)
{
	with(this)
	{
		clearTimeout(mtsTimer);
		if(menus[mN])menus[mN].out()
	}
};

function FSMenuNode(id,isRoot,obj)
{
	this.id=id;this.isRoot=isRoot;
	this.obj=obj;
	this.lyr=this.child=this.par=this.timer=this.visible=null;
	this.args=[];
	var node=this;
	this.over=function(evt)
	{
		with(node)with(obj)
		{
			if(isNS4&&evt&&lyr.ref)lyr.ref.routeEvent(evt);
			clearTimeout(timer);
			clearTimeout(mtsTimer);
			if(!isRoot&&!visible)node.show();
			if(menuToShow.length)
			{
				var a=menuToShow,m=a[0];
				if(!menus[m]||!menus[m].lyr.ref)menus[m]=new FSMenuNode(m,false,obj);
				var c=menus[m];
				if(c==node)
				{
					menuToShow.length=0;
					return
				}
				clearTimeout(c.timer);
				if(c!=child&&c.lyr.ref)
				{
					c.args.length=a.length;
					for(var i=0;i<a.length;i++)
					c.args[i]=a[i];
					var delay=child?switchDelay:showDelay;
					c.timer=setTimeout('with('+myName+'){menus["'+c.id+'"].par=menus["'+node.id+'"];menus["'+c.id+'"].show()}',delay?delay:1)
				}
				menuToShow.length=0
			}
			if(!nested&&par)par.over()
		}
	};
	this.out=function(evt)
	{
		with(node)with(obj)
		{
		if(isNS4&&evt&&lyr&&lyr.ref)lyr.ref.routeEvent(evt);clearTimeout(timer);
			if(!isRoot)
			{
				timer=setTimeout(myName+'.menus["'+id+'"].hide()',hideDelay);
				if(!nested&&par)par.out()
			}
		}
	};
	if(this.id!='root')with(this)with(lyr=getLyr(id))if(ref)
	{
		if(isNS4)ref.captureEvents(Event.MOUSEOVER|Event.MOUSEOUT);
		addEvent(ref,'mouseover',this.over);
		addEvent(ref,'mouseout',this.out);
		if(obj.nested)
		{
			addEvent(ref,'focus',this.over);
			addEvent(ref,'click',this.over);
			addEvent(ref,'blur',this.out)
		}
	}
};


FSMenuNode.prototype.show=function()
{
	with(this)with(obj)
	{
		if(!lyr||!lyr.ref)return;
		if(par)
		{
			if(par.child&&par.child!=this)par.child.hide();
			par.child=this
		}
		var offR=args[1],offX=args[2],offY=args[3],lX=0,lY=0,doX=''+offX!='undefined',doY=''+offY!='undefined';
		if(self.page&&offR&&(doX||doY))
		{
			with(page.elmPos(offR,par.lyr?par.lyr.ref:0))lX=x,lY=y;
			if(doX)lyr.x(lX+eval(offX));
			if(doY)lyr.y(lY+eval(offY))
		}
		if(offR)lightParent(offR,1);
		visible=1;
		if(obj.onshow)obj.onshow(id);
		setVis(1)
	}
};
		
FSMenuNode.prototype.hide=function()
{
	with(this)with(obj)
		{
			if(!lyr||!lyr.ref)return;
			if(isNS4&&self.isMouseIn&&isMouseIn(lyr.ref))return show();
			if(args[1])lightParent(args[1],0);
			if(child)child.hide();
			if(par&&par.child==this)par.child=null;par=null;
			if(lyr)
			{
				visible=0;
				if(obj.onhide)obj.onhide(id);
				setVis(0)
			}
		}
};

FSMenuNode.prototype.lightParent=function(elm,lit)
{
	with(this)with(obj)
	{
		if(!cssLitClass||isNS4)return;
		if(lit)
			elm.className+=(elm.className?' ':'')+cssLitClass;
		else 
			elm.className=elm.className.replace(new RegExp('(\\s*'+cssLitClass+')+$'),'')
	}
};

FSMenuNode.prototype.setVis=function(sh)
{
	with(this)with(obj)
	{
		lyr.timer|=0;
		lyr.counter|=0;
		with(lyr)
		{
			clearTimeout(timer);
			if(sh&&!counter)sty[cssProp]=cssVis;
			if(isDOM&&animSpeed<100)
			for(var a=0;a<animations.length;a++)
				animations[a](ref,counter);
			counter+=animSpeed*(sh?1:-1);
			if(counter>100){counter=100}
			else if(counter<=0){counter=0;sty[cssProp]=cssHid}
			else if(isDOM)timer=setTimeout(myName+'.menus["'+id+'"].setVis('+sh+')',50)
		}
	}
};

FSMenu.prototype.activateMenu=function(id,subInd)
{
	with(this)
	{
		if(!isDOM)return;
		var a,ul,li,mRoot=getRef(id),nodes,count=1;
		if(isIE)
		{
			var aNodes=mRoot.getElementsByTagName('a');
			for(var i=0;i<aNodes.length;i++)
			{
				addEvent(aNodes[i],'focus',new Function('e','var node=this.parentNode;while(node){if(node.onfocus)setTimeout(node.onfocus,1,e);node=node.parentNode}'));
				addEvent(aNodes[i],'blur',new Function('e','var node=this.parentNode;while(node){if(node.onblur)node.onblur(e);node=node.parentNode}'))
			}
		}
		var lists=mRoot.getElementsByTagName('ul');
		for(var i=0;i<lists.length;i++)
		{
			li=ul=lists[i];
			while(li)
			{
				if(li.nodeName.toLowerCase()=='li')break;
				li=li.parentNode
			}
			if(!li)continue;
			a=null;
			for(var j=0;j<li.childNodes.length;j++)
			if(li.childNodes[j].nodeName.toLowerCase()=='a')
				a=li.childNodes[j];
			if(!a)continue;
			var menuID=myName+'-id-'+count++;
			if(ul.id)menuID=ul.id;
			else ul.setAttribute('id',menuID);
			var sOC=(showOnClick==1&&li.parentNode==mRoot)||(showOnClick==2);
			var eShow=new Function('with('+myName+'){'+(sOC?'if(menus["'+menuID+'"]&&menus["'+menuID+'"].visible)':'')+' show("'+menuID+'",this)}');
			var eHide=new Function(myName+'.hide("'+menuID+'")');
			addEvent(a,'mouseover',eShow);
			addEvent(a,'focus',eShow);
			addEvent(a,'mouseout',eHide);
			addEvent(a,'blur',eHide);
			if(sOC)addEvent(a,'click',new Function('e',myName+'.show("'+menuID+'",this);if(e.cancelable&&e.preventDefault)e.preventDefault();return false'));
			if(subInd)a.insertBefore(subInd.cloneNode(true),a.firstChild)}menus[id]=new FSMenuNode(id,true,this)
	}
};
	
var menu=new FSMenu('menu',true,'visibility','visible','hidden');
menu.cssLitClass='highlighted';

function animClipDown(ref,counter)
{
	var cP=Math.pow(Math.sin(Math.PI*counter/200),0.75);
	ref.style.clip=(counter==100?(window.opera?'':'rect(auto,auto,auto,auto)'):'rect(0,'+(ref.offsetWidth*cP)+'px,'+(ref.offsetHeight*cP)+'px,0)')
};
menu.animations[menu.animations.length]=animClipDown;menu.animSpeed=20;
var menuFloat=0;var menuFixed=!isIE||isOp;
function menuLock()
{
	menuFloat=!menuFloat;
	var mc=getSty('navigation');
	if(menuFixed)
	{
		mc.position=menuFloat?'fixed':'absolute';mc.top=menuFloat?'6em':'1em'
	}
	else
	{
		if(menuFloat)window.onscroll();
		else mc.paddingTop=0
	}
	var tag=getRef('menulock');
	tag.removeChild(tag.firstChild);
	tag.appendChild(document.createTextNode('('+(menuFloat?'Lock':'Float')+' menu)'));
	if(!document.cookie.match(/navsettings=/))
	{
		document.cookie='navsettings=menufloat:'+(menuFloat?1:0)+';path=/'
	}
	else
	{
		document.cookie=document.cookie.replace(/menufloat:./,'menufloat:'+(menuFloat?1:0))
	}
};
if(!menuFixed)window.onscroll=function()
{
	if(menuFloat&&isDOM)getSty('navigation').paddingTop=(document.body.scrollTop||(isDOM?document.documentElement.scrollTop:0))+'px'
};
var h1Arr=[];

function h1Setup()
{
	h1Arr=document.getElementsByTagName('h1');
	for(var h=0;h<h1Arr.length;h++)
	{
		var h1=h1Arr[h],text=h1.firstChild.nodeValue;h1.removeChild(h1.firstChild);h1.animNodes=[];
		for(var i=0;i<text.length;i++)
		{
			var span=document.createElement('span');
			span.appendChild(document.createTextNode(text.substring(i,i+1)));
			h1.appendChild(span);
			h1.animNodes[h1.animNodes.length]=span
		}
		h1.animCount=0;
		h1.animTimer=setInterval('h1Anim('+h+')',50)
	}
};
function h1Anim(h)
{
	var h1=h1Arr[h],c=h1.animCount++,noAnim=1;
	for(var i=0;i<h1.animNodes.length;i++)
	{
		var s=h1.animNodes[i];
		var frac=Math.max(0,Math.min(1,(c-i)/10));
		if(s.animDone)continue;
		noAnim=0;
		s.style.color='rgb('+parseInt(255-255*frac)+','+parseInt(255-111*frac)+','+parseInt(255-111*frac)+')';
		if(frac==1)
		{
			s.style.marginLeft='auto';s.animDone=1
		}
		else if(frac>0)s.style.marginLeft=0.6*(1-frac)+'em'
	}
	if(noAnim)clearInterval(h1.animTimer);
	h1.style.visibility='visible'
};
var zoomVal=0;
function zoom(val)
{
	if(!document.body||!document.body.style)return;
	zoomVal=(val?zoomVal+val:0);
	document.body.style.fontSize=(80+zoomVal*10)+'%'
};

function loadHandler()
{
	if(!isDOM)return;
	var arrow=null;
	if(document.createElement&&document.documentElement)
	{
		arrow=document.createElement('span');
		arrow.appendChild(document.createTextNode('>'));
		arrow.className='subind'
	}
	menu.activateMenu("menuroot",arrow);
	if(document.createTextNode)
	{
		var ml=document.createElement('span');
		ml.setAttribute('id','menulock');
		addEvent(ml,'click',menuLock);
		ml.appendChild(document.createTextNode(''));
		getRef('navigation').appendChild(ml);
		if(document.cookie&&document.cookie.match(/menufloat:0/))menuLock()
	}
	if(!document.documentElement||(isIE&&!isOp&&(navigator.userAgent.indexOf('Mac')>-1)))return;
	h1Setup();
	var lt=document.createElement('div'),nav=getRef('navigation');
//	lt.setAttribute('id','linktitle');
//	nav.appendChild(lt);
	addEvent(nav,'mouseover',new Function('e','e=e||window.event;//var lt=getRef("linktitle");if(lt){while(lt.firstChild)lt.removeChild(lt.firstChild);e=e.target||e.srcElement;while(e&&(!e.title&&!e.title_orig))e=e.parentNode;if(e&&e.getAttribute){var t=e.getAttribute("title");if(t){e.title_orig=t;e.setAttribute("title","")}lt.appendChild(document.createTextNode(e.title_orig));}}'));addEvent(nav,'mouseout',new Function('e','//var lt=getRef("linktitle");if(lt)while(lt.firstChild)lt.removeChild(lt.firstChild)'));
	var pZoom=document.createElement('div');pZoom.setAttribute('id','pagezoom');
	var zControls=[['+X'.substring(0,1),'Zoom In','zoom(1)'],['0','Restore Original Zoom','zoom(0)'],['-','Zoom Out','zoom(-1)']];
	for(var c in zControls)
	{
		var tmp=document.createElement('span');tmp.appendChild(document.createTextNode(zControls[c][0]));
		tmp.setAttribute('title',zControls[c][1]);
		addEvent(tmp,'click',new Function(zControls[c][2]));
		addEvent(tmp,'mouseover',new Function('this.className="zoomHover"'));
		addEvent(tmp,'mouseout',new Function('this.className=""'));
		pZoom.appendChild(tmp)
	}
	//getRef('header').appendChild(pZoom);
	if(location.href.indexOf('twinhelix.com')==-1)
	{
		var warning=document.createElement('div');warning.appendChild(document.createTextNode('WARNING:Copying this site is a violation of international law.'));//getRef('footer').appendChild(warning)
	}
};

if(navigator.userAgent.indexOf('KHTML')>-1)
	var safHack=setInterval('if(document.readyState=="complete"){clearInterval(safHack);loadHandler()}',100);
else addEvent(window,'load',loadHandler);

if(isDOM&&document.documentElement)
{
	document.write('<style type="text/css">h1{visibility:hidden}</style>')
}