b = document;
g = false;
h = true;
v = alert;

b=document;
e=b.all;
f=window;
g=false;
h=true;
j=Function;
k=navigator;
l=k.userAgent;
n=top;
p=parseInt;
q=Math;
s=q.max;
u=q.min;
w=Date;

DropMenu.spacerGif="http://www.barskydiamonds.com/images/1x1spacer.gif";
DropMenu.dingbatOn="http://www.barskydiamonds.com/images/1x1spacer.gif";
DropMenu.dingbatOff="http://www.barskydiamonds.com/images/1x1spacer.gif";
DropMenu.dingbatSize=1;
DropMenu.menuPadding=1;
DropMenu.itemPadding=4;
DropMenu.shadowSize=2;
DropMenu.shadowOffset=3;
DropMenu.shadowColor="#888";
DropMenu.shadowPng="http://www.barskydiamonds.com/images/grey-40.png";
DropMenu.backgroundColor="white";
DropMenu.backgroundPng="http://www.barskydiamonds.com/images/white-90.png";
DropMenu.hideDelay=100;
DropMenu.slideTime=250;
DropMenu.reference={topLeft:1,topRight:2,bottomLeft:3,bottomRight:4};
DropMenu.direction={down:1,right:2};
DropMenu.registry=[];
DropMenu._maxZ=100;

DropMenu.isSupported=function()
{
	var ua=k.userAgent.toLowerCase();
	var pf=k.platform.toLowerCase();
	var an=k.appName;
	var r=g;
	if (ua.indexOf("gecko")>-1&&k.productSub>=20020605) r=h;
	else if(an=="Microsoft Internet Explorer")
	{
		if(b.getElementById)
		{
			if(pf.indexOf("mac")==0)
			{
				r=/msie (\d(.\d*)?)/.test(ua)&&Number(RegExp.$1)>=5.1
			}
			else r=h
		}
	}
	
	return r
};

DropMenu.initialize = function()
{
	for(var i=0,menu=null;menu=this.registry[i];i++)
	{
		menu.initialize();
	}
};

DropMenu.renderAll=function()
{
	var aMenuHtml=[];
	
	for(var i=0,menu=null;menu=this.registry[i];i++)
	{
		aMenuHtml[i]=menu.toString();
	}
	
	b.write (aMenuHtml.join(""));
};

function DropMenu (oActuator,iDirection,iLeft,iTop,iReferencePoint,parentMenuSet)
{
	this.addItem=addItem;
	this.addMenu=addMenu;
	this.toString=toString;
	this.initialize=initialize;
	this.isOpen=g;
	this.show=show;
	this.hide=hide;
	this.items=[];
	this.trigger=oActuator;
	this.onactivate=new j();
	this.ondeactivate=new j();
	this.onmouseover=new j();
	this.onqueue=new j();
	this.ondequeue=new j();
	this.index=DropMenu.registry.length;
	DropMenu.registry[this.index]=this;
	var id="DropMenu"+this.index;
	var contentHeight=null;
	var contentWidth=null;
	var childMenuSet=null;
	var animating=g;
	var childMenus=[];
	var slideAccel=-1;
	var elmCache=null;
	var ready=g;
	var _this=this;
	var a=null;
	var pos=iDirection==DropMenu.direction.down ? "top" : "left";
	var dim=null;
	
	function addItem(sText,sUrl,menuID)
	{
		var item=new DropMenuItem(sText,sUrl,this,menuID);
		item._index=this.items.length;
		this.items[item._index]=item
	}
	
	function addMenu(oMenuItem)
	{
		if(!oMenuItem.parentMenu==this) throw new Error("Cannot add a menu here");
		if(childMenuSet==null) childMenuSet = new DropMenuSet(DropMenu.direction.right,-5,2,DropMenu.reference.topRight);
		var m=childMenuSet.addMenu(oMenuItem);
		childMenus[oMenuItem._index]=m;
		m.onmouseover=child_mouseover;
		m.ondeactivate=child_deactivate;
		m.onqueue=child_queue;
		m.ondequeue=child_dequeue;
		return m
	}
	
	function initialize()
	{
		initCache();
		initEvents();
		initSize();
		ready=h
	}
	
	function show()
	{
		if(ready)
		{
			_this.isOpen=h;
			animating=h;
			setContainerPos();
			elmCache["clip"].style.visibility="visible";
			elmCache["clip"].style.zIndex=DropMenu._maxZ++;
			slideStart();
			_this.onactivate();
		}
	}
	
	function hide()
	{
		if(ready)
		{
			_this.isOpen=g;
			animating=h;
			for(var i=0,item=null;item=elmCache.item[i];i++)dehighlight(item);
			if(childMenuSet)childMenuSet.hide();
			slideStart();
			_this.ondeactivate();
		}
	}
	
	function setContainerPos()
	{
		var sub=oActuator.constructor==DropMenuItem;
		var act=sub?oActuator.parentMenu.elmCache["item"][oActuator._index]:oActuator;
		var el=act;
		var x=0;
		var y=-6;
		var minX=0;
		var maxX=(f.innerWidth?f.innerWidth:b.body.clientWidth)-p(elmCache["clip"].style.width);
		var minY=-6;
		var maxY=(f.innerHeight?f.innerHeight:b.body.clientHeight)-p(elmCache["clip"].style.height);
		
		while(sub?el.parentNode.className.indexOf("DropMenu")==-1:el.offsetParent)
		{
			x+=el.offsetLeft;
			y+=el.offsetTop+2;
			if(el.scrollLeft)x-=el.scrollLeft;
			if(el.scrollTop)y-=el.scrollTop;
			el=el.offsetParent
		}
		
		if(oActuator.constructor==DropMenuItem)
		{
			x+=p(el.parentNode.style.left);
			y+=p(el.parentNode.style.top);
		}
		
		switch(iReferencePoint)
		{
			case DropMenu.reference.topLeft:
			break;
			case DropMenu.reference.topRight:x+=act.offsetWidth;
			break;
			case DropMenu.reference.bottomLeft:y+=act.offsetHeight;
			break;
			case DropMenu.reference.bottomRight:x+=act.offsetWidth;y+=act.offsetHeight;
			break
		}
		
		x+=iLeft;
		y+=iTop;
		x=q.max(q.min(x,maxX),minX);
		y=q.max(q.min(y,maxY),minY);
		elmCache["clip"].style.left=x+"px";
		elmCache["clip"].style.top=y+"px"
	}
	
	function slideStart()
	{
		var x0=p(elmCache["content"].style[pos]);
		var x1=_this.isOpen?0:-dim;
		if(a!=null)a.stop();
		a=new Accelimation(x0,x1,DropMenu.slideTime,slideAccel);
		a.onframe=slideFrame;
		a.onend=slideEnd;
		a.start();
	}
	
	function slideFrame(x)
	{
		elmCache["content"].style[pos]=x+"px"
	}
	
	function slideEnd()
	{
		if(!_this.isOpen)elmCache["clip"].style.visibility="hidden";
		animating=g
	}
	
	function initSize()
	{
		var ow=elmCache["items"].offsetWidth;
		var oh=elmCache["items"].offsetHeight;
		var ua=k.userAgent.toLowerCase();
		elmCache["clip"].style.width=ow+DropMenu.shadowSize+2+"px";
		elmCache["clip"].style.height=oh+DropMenu.shadowSize+2+"px";
		elmCache["content"].style.width=ow+DropMenu.shadowSize+"px";
		elmCache["content"].style.height=oh+DropMenu.shadowSize+"px";
		contentHeight=oh+DropMenu.shadowSize;
		contentWidth=ow+DropMenu.shadowSize;
		dim=iDirection==DropMenu.direction.down?contentHeight:contentWidth;
		elmCache["content"].style[pos]=-dim-DropMenu.shadowSize+"px";
		elmCache["clip"].style.visibility="hidden";
		
		if(ua.indexOf("mac")==-1||ua.indexOf("gecko")>-1)
		{
			elmCache["background"].style.width=ow+"px";
			elmCache["background"].style.height=oh+"px";
			elmCache["background"].style.backgroundColor=DropMenu.backgroundColor;
			elmCache["shadowRight"].style.left=ow+"px";
			elmCache["shadowRight"].style.height=oh-(DropMenu.shadowOffset-DropMenu.shadowSize)+"px";
			elmCache["shadowRight"].style.backgroundColor=DropMenu.shadowColor;
			elmCache["shadowBottom"].style.top=oh+"px";
			elmCache["shadowBottom"].style.width=ow-DropMenu.shadowOffset+"px";
			elmCache["shadowBottom"].style.backgroundColor=DropMenu.shadowColor
		}
		else
		{
			elmCache["background"].firstChild.src=DropMenu.backgroundPng;
			elmCache["background"].firstChild.width=ow;
			elmCache["background"].firstChild.height=oh;
			elmCache["shadowRight"].firstChild.src=DropMenu.shadowPng;
			elmCache["shadowRight"].style.left=ow+"px";
			elmCache["shadowRight"].firstChild.width=DropMenu.shadowSize;
			elmCache["shadowRight"].firstChild.height=oh-(DropMenu.shadowOffset-DropMenu.shadowSize);
			elmCache["shadowBottom"].firstChild.src=DropMenu.shadowPng;
			elmCache["shadowBottom"].style.top=oh+"px";
			elmCache["shadowBottom"].firstChild.height=DropMenu.shadowSize;
			elmCache["shadowBottom"].firstChild.width=ow-DropMenu.shadowOffset
		}
	}
	
	function initCache()
	{
		var menu=b.getElementById(id);
		var all=menu.all?menu.all:menu.getElementsByTagName("*");
		elmCache={};
		elmCache["clip"]=menu;
		elmCache["item"]=[];
		
		for(var i=0,elm=null;elm=all[i];i++)
		{
			switch(elm.className)
			{
				case"items":
				case"content":
				case"background":
				case"shadowRight":
				case"shadowBottom":
					elmCache[elm.className]=elm;
					break;
				case"item":
					elm._index=elmCache["item"].length;
					elmCache["item"][elm._index]=elm;
					break
			}
		}
		
		_this.elmCache=elmCache
	}
	
	function initEvents()
	{
		for(var i=0,item=null;item=elmCache.item[i];i++)
		{
			item.onmouseover=item_mouseover;
			item.onmouseout=item_mouseout;
			item.onclick=item_click
		}
		
		if(typeof oActuator.tagName!="undefined")
		{
			oActuator.onmouseover=actuator_mouseover;
			oActuator.onmouseout=actuator_mouseout
		}
		
		elmCache["content"].onmouseover=content_mouseover;
		elmCache["content"].onmouseout=content_mouseout
	}
	
	function highlight(oRow)
	{
		var mmen = oRow.getAttribute ('mmen');
		
		oRow.className = "item_" + mmen + " hover";
		
		if(childMenus[oRow._index])oRow.lastChild.firstChild.src=DropMenu.dingbatOn
	}
	
	function dehighlight(oRow)
	{
		oRow.className="item";
		if(childMenus[oRow._index])oRow.lastChild.firstChild.src=DropMenu.dingbatOff
	}
	
	function item_mouseover()
	{
		if(!animating)
		{
			highlight(this);
			if(childMenus[this._index])childMenuSet.showMenu(childMenus[this._index]);
			else if(childMenuSet)childMenuSet.hide();
		}
	}
	
	function item_mouseout()
	{
		if(!animating)
		{
			if(childMenus[this._index])childMenuSet.hideMenu(childMenus[this._index]);
			else dehighlight(this);
		}
	}
	
	function item_click()
	{
		if(!animating)
		{
			if(_this.items[this._index].url)location.href=_this.items[this._index].url
			/*
			if(_this.items[this._index].url)
			{
				redirect_load (_this.items[this._index].url);
				parentMenuSet.hideMenu(_this);
			}
			*/
		}
	}
	
	function actuator_mouseover()
	{
		parentMenuSet.showMenu(_this);
	}
	
	function actuator_mouseout()
	{
		parentMenuSet.hideMenu(_this);
	}
	
	function content_mouseover()
	{
		if(!animating)
		{
			parentMenuSet.showMenu(_this);
			_this.onmouseover();
		}
	}
	
	function content_mouseout()
	{
		if(!animating)
		{
			parentMenuSet.hideMenu(_this);
		}
	}
	
	function child_mouseover()
	{
		if(!animating)
		{
			parentMenuSet.showMenu(_this);
		}
	}
	
	function child_deactivate()
	{
		for(var i=0;i<childMenus.length;i++)
		{
			if(childMenus[i]==this)
			{
				dehighlight(elmCache["item"][i]);break
			}
		}
	}
	
	function child_queue()
	{
		parentMenuSet.hideMenu(_this);
	}
	
	function child_dequeue()
	{
		parentMenuSet.showMenu(_this);
	}
	
	function toString()
	{
		var aHtml=[];
		var sClassName="DropMenu"+(oActuator.constructor!=DropMenuItem?" top":"");
		for(var i=0,item=null;item=this.items[i];i++)
		{
			aHtml[i]=item.toString(childMenus[i]);
		}
		
		return '<div id="'+id+'" class="'+sClassName+'">'+'<div class="content"><table class="items" cellpadding="0" cellspacing="0" border="0">'+'<tr><td colspan="2"><img src="'+DropMenu.spacerGif+'" width="1" height="'+DropMenu.menuPadding+'"></td></tr>'+aHtml.join('')+'<tr><td colspan="2"><img src="'+DropMenu.spacerGif+'" width="1" height="'+DropMenu.menuPadding+'"></td></tr></table>'+'<div class="shadowBottom"><img src="'+DropMenu.spacerGif+'" width="1" height="1"></div>'+'<div class="shadowRight"><img src="'+DropMenu.spacerGif+'" width="1" height="1"></div>'+'<div class="background"><img src="'+DropMenu.spacerGif+'" width="1" height="1"></div>'+'</div></div>'
	}
}

DropMenuSet.registry=[];
function DropMenuSet(iDirection,iLeft,iTop,iReferencePoint)
{
	this.addMenu=addMenu;
	this.showMenu=showMenu;
	this.hideMenu=hideMenu;
	this.hide=hide;
	this.hideCurrent=hideCurrent;
	var menus=[];
	var _this=this;
	var current=null;
	this.index=DropMenuSet.registry.length;
	DropMenuSet.registry[this.index]=this;
	
	function addMenu(oActuator)
	{
		var m=new DropMenu(oActuator,iDirection,iLeft,iTop,iReferencePoint,this);
		menus[menus.length]=m;
		return m
	}
	
	function showMenu(oMenu)
	{
		if(oMenu!=current)
		{
			if(current!=null)hide(current);
			current=oMenu;
			oMenu.show();
		}
		else
		{
			cancelHide(oMenu);
		}
	}
	
	function hideMenu(oMenu)
	{
		if(current==oMenu&&oMenu.isOpen)
		{
			if(!oMenu.hideTimer)scheduleHide(oMenu);
		}
	}
	
	function scheduleHide(oMenu)
	{
		oMenu.onqueue();
		oMenu.hideTimer=f.setTimeout("DropMenuSet.registry["+_this.index+"].hide(DropMenu.registry["+oMenu.index+"])",DropMenu.hideDelay);
	}
	
	function cancelHide(oMenu)
	{
		if(oMenu.hideTimer)
		{
			oMenu.ondequeue();
			f.clearTimeout(oMenu.hideTimer);
			oMenu.hideTimer=null
		}
	}
	
	function hide(oMenu)
	{
		if(!oMenu&&current)oMenu=current;
		if(oMenu&&current==oMenu&&oMenu.isOpen)
		{
			hideCurrent();
		}
	}
	
	function hideCurrent()
	{
		if(null!=current)
		{
			cancelHide(current);
			current.hideTimer=null;
			current.hide();
			current=null
		}
	}
}

function DropMenuItem(sText,sUrl,oParent,menuID)
{
	this.toString=toString;
	this.text=sText;
	this.url=sUrl;
	this.parentMenu=oParent;
	
	function toString(bDingbat)
	{
		var sDingbat=bDingbat?DropMenu.dingbatOff:DropMenu.spacerGif;
		var iEdgePadding=DropMenu.itemPadding+DropMenu.menuPadding;
		var sPaddingLeft="padding:"+DropMenu.itemPadding+"px; padding-left:"+iEdgePadding+"px;";
		var sPaddingRight="padding:"+DropMenu.itemPadding+"px; padding-right:"+iEdgePadding+"px;";
		
		return'<tr class="item" mmen="' + menuID + '"><td nowrap style="'+sPaddingLeft+'">'+sText+'</td><td width="14" style="'+sPaddingRight+'">'+'<img src="'+sDingbat+'" width="14" height="14"></td></tr>'
	}
}

function Accelimation(from,to,time,zip)
{
	if(typeof zip=="undefined")zip=0;
	if(typeof unit=="undefined")unit="px";
	this.x0=from;
	this.x1=to;
	this.dt=time;
	this.zip=-zip;
	this.unit=unit;
	this.timer=null;
	this.onend=new j();
	this.onframe=new j();
}

Accelimation.prototype.start=function()
{
	this.t0=new w().getTime();
	this.t1=this.t0+this.dt;
	var dx=this.x1-this.x0;
	this.c1=this.x0+((1+this.zip)*dx/3);
	this.c2=this.x0+((2+this.zip)*dx/3);
	Accelimation._add(this);
};

Accelimation.prototype.stop=function()
{
	Accelimation._remove(this);
};

Accelimation.prototype._paint=function(time)
{
	if(time<this.t1)
	{
		var elapsed=time-this.t0;this.onframe(Accelimation._getBezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
	}
	else this._end();
};

Accelimation.prototype._end=function()
{
	Accelimation._remove(this);
	this.onframe(this.x1);
	this.onend();
};

Accelimation._add=function(o)
{
	var index=this.instances.length;
	this.instances[index]=o;
	if(this.instances.length==1)
	{
		this.timerID=f.setInterval("Accelimation._paintAll()",this.targetRes);
	}
};

Accelimation._remove=function(o)
{
	for(var i=0;i<this.instances.length;i++)
	{
		if(o==this.instances[i])
		{
			this.instances=this.instances.slice(0,i).concat(this.instances.slice(i+1));
			break
		}
	}
	
	if(this.instances.length==0)
	{
		f.clearInterval(this.timerID);
		this.timerID=null
	}
};

Accelimation._paintAll=function()
{
	var now=new w().getTime();
	for(var i=0;i<this.instances.length;i++)
	{
		this.instances[i]._paint(now);
	}
};

Accelimation._B1=function(t)
{
	return t*t*t
};

Accelimation._B2=function(t)
{
	return 3*t*t*(1-t)
};

Accelimation._B3=function(t)
{
	return 3*t*(1-t)*(1-t)
};
Accelimation._B4=function(t)
{
	return(1-t)*(1-t)*(1-t)
};
Accelimation._getBezier=function(percent,startPos,endPos,control1,control2)
{
	return endPos*this._B1(percent)+control2*this._B2(percent)+control1*this._B3(percent)+startPos*this._B4(percent);
};
Accelimation.instances=[];
Accelimation.targetRes=10;
Accelimation.timerID=null;

if(f.attachEvent)
{
	cearElementProps=['data','onmouseover','onmouseout','onmousedown','onmouseup','ondblclick','onclick','onselectstart','oncontextmenu'];
	f.attachEvent("onunload",function()
	{
		var el;
		for(var d=b.all.length;d--;)
		{
			el=b.all[d];
			for(var c=cearElementProps.length;c--;)
			{
				el[cearElementProps[c]]=null
			}
		}
	});
}

function add_menu()
{
	var root=b.getElementById('nav');
	var ms=new DropMenuSet(DropMenu.direction.down,1,0,DropMenu.reference.bottomLeft);
	for(x=0;x<root.childNodes.length;x++)
	{
		if(root.childNodes[x].nodeName=='LI' && root.childNodes[x].childNodes.length>2)
		{
			
		
			var newmenu=ms.addMenu(root.childNodes[x]);
			newmenu.onactivate=function()
			{
				this.trigger.className="hovered"
			};
			
			newmenu.ondeactivate=function()
			{
				this.trigger.className=""
			};
			
			for(y=0;y<root.childNodes[x].childNodes.length;y++)
			{
				if(root.childNodes[x].childNodes[y].className=='submenu')
				{
					if(root.childNodes[x].childNodes[y].childNodes.length>0)
					{
						var menuelem=root.childNodes[x].childNodes[y];
						for(z=0;z<menuelem.childNodes.length;z++)
						{
							if(menuelem.childNodes[z].nodeName=='A')
							{
								newmenu.addItem(menuelem.childNodes[z].innerHTML,menuelem.childNodes[z].href,root.childNodes[x].id);
							}
						}
					}
				}
			}
		}
	}
	
	DropMenu.renderAll();
}